Cardiologist Mathieu Gillet uses hydroalcoholic gel at the post COVID-19 unit of the Clinique Breteche private hospital in Nantes during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. ?REUTERS/Stephane Mahe

Cardiologist Mathieu Gillet adjusts his protective equipment at the post COVID-19 unit of the Clinique Breteche private hospital in Nantes during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. ?REUTERS/Stephane Mahe

Cardiologist Mathieu Gillet examines a patient at the post COVID-19 unit of the Clinique Breteche private hospital in Nantes during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. ?REUTERS/Stephane Mahe

Cardiologist Roberto Canessa is seen next to a ventilator developed by him and others that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. Picture taken April 9, 2020. REUTERS/Mariana Greif

Cardiologist Roberto Canessa is seen next to a ventilator developed by him and others that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. Picture taken April 9, 2020. REUTERS/Mariana Greif

Marcio Larrosa, (L) Marcelo Larrosa, (C) and cardiologist Robert Canessa are seen with a ventilator they developed that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. Picture taken April 9, 2020. REUTERS/Mariana Greif

Cardiologist Roberto Canessa is seen next to a ventilator developed by him and others that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. Picture taken April 9, 2020. REUTERS/Mariana Greif

Cardiologist Benjamin Meder is pictured during a heart catheterization at the Heidelberg University Hospital (Universitaetsklinikum Heidelberg) in Heidelberg, Germany, August 14, 2018. Picture taken August 14, 2018. To match Insight HEALTHCARE-MEDICAL TECHNOLOGY/AI REUTERS/Ralph Orlowski

Cardiologists are seen during a heart catheterization at the Heidelberg University Hospital (Universitaetsklinikum Heidelberg) in Heidelberg, Germany, August 14, 2018. Picture taken August 14, 2018. To match Insight HEALTHCARE-MEDICAL TECHNOLOGY/AI REUTERS/Ralph Orlowski

Cardiologists are seen during a heart catheterization at the Heidelberg University Hospital (Universitaetsklinikum Heidelberg) in Heidelberg, Germany, August 14, 2018. Picture taken August 14, 2018. To match Insight HEALTHCARE-MEDICAL TECHNOLOGY/AI REUTERS/Ralph Orlowski

Cardiologists are seen during a heart catheterization at the Heidelberg University Hospital (Universitaetsklinikum Heidelberg) in Heidelberg, Germany, August 14, 2018. Picture taken August 14, 2018. To match Insight HEALTHCARE-MEDICAL TECHNOLOGY/AI REUTERS/Ralph Orlowski

Volunteer cardiologist of the Aegean Team Nikos Patsourakos (R), 45, examines local Kostas Amorgianos on the islet of Thymaina, Greece, May 11, 2017. REUTERS/Alkis Konstantinidis SEARCH "AEGEAN DOCTORS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Cardiologist Olga Steblina examines a patient after a heart surgery at the Federal Center of Cardiovascular Surgery in the Siberian city of Krasnoyarsk, Russia, September 28, 2016. Picture taken September 28, 2016. REUTERS/Ilya Naymushin

Andres Manuel Lopez Beltran (2nd L), son of Mexican leftist leader Andres Manuel Lopez Obrador, speaks during a news conference at Medica Sur hospital in Mexico City December 3, 2013. Lopez Obrador, runner-up to President Enrique Pena Nieto in last year's election, suffered a heart attack early on Tuesday and was admitted to hospital, but is improving, doctors said. From L-R: Lopez Obrador's spokesman Cesar Yanez, Lopez Beltran and cardiologists Patricio Ortiz and Octavio Gutierrez. REUTERS/Tomas Bravo (MEXICO - Tags: POLITICS HEALTH)

Cardiology technician Patricia Gago (C) and cardiac patients take part in a tango workshop in Buenos Aires August 6, 2012. Tango lessons are added to the rehabilitation routines, which include tape and bicycle exercises, for patients who suffered heart attacks, heart disease or have heart pacemakers, the head of rehabilitation in the Paroissien public state hospital, Alberto Marani said. REUTERS/Enrique Marcarian (ARGENTINA - Tags: HEALTH SOCIETY)

Cardiologist technician Roxana Penayo (C) helps a cardiac patient during a tango workshop in Buenos Aires August 6, 2012. Tango lessons are added to the rehabilitation routines, which include tape and bicycle exercises, for patients who suffered heart attacks, heart disease or have heart pacemakers, the head of rehabilitation in the Paroissien public state hospital, Alberto Marani said. REUTERS/Enrique Marcarian (ARGENTINA - Tags: HEALTH SOCIETY)

Haitian cardiologist Michael Theard examines a child to determine the severity of his heart defect in Port-au-Prince April 14, 2012. Eleven children are receiving surgery provided by a mission of pediatric cardiovascular surgeons, doctors and nurses from France's La Chaine de L'Espoir and the Montefiore Medical Center in New York. Among Haiti's population of 10 million, health officials estimate there are around 10,000 cases of rheumatic and congenital heart disease, which according to the World Health Organization are the number one cause of death globally. Picture taken April 14, 2012. REUTERS/Swoan Parker (HAITI - Tags: HEALTH POLITICS)

Children with serious heart ailments wait outside the Degand Clinic to be examined by an international mission of cardiologists to see if they will be selected for surgery, in Port-au-Prince April 14, 2012. Eleven children will receive surgery provided by a mission of pediatric cardiovascular surgeons, doctors and nurses from France's La Chaine de L'Espoir and the Montefiore Medical Center in New York. Among Haiti's population of 10 million, health officials estimate there are around 10,000 cases of rheumatic and congenital heart disease, which according to the World Health Organization are the number one cause of death globally. Picture taken April 14. REUTERS/Swoan Parker (HAITI - Tags: HEALTH POLITICS)

Veterinary staff monitor Dylan the Chimpanzee whilst cardiologist Eric Stohr of Cardiff Metropolitan University carries out a cardio ultrasound examination at Chester Zoo in Liverpool, northern England, March 26, 2012. The tests are part of a international programme looking into the heart conditions of great apes.REUTERS/Phil Noble (BRITAIN - Tags: ENVIRONMENT SOCIETY ANIMALS)

Heart monitoring pads are applied to Dylan the Chimpanzee whilst cardiologist Eric Stohr of Cardiff Metropolitan University carries out a cardio ultrasound examination at Chester Zoo in Liverpool, northern England, March 26, 2012. The tests are part of a international programme looking into the heart conditions of great apes.REUTERS/Phil Noble (BRITAIN - Tags: ENVIRONMENT SOCIETY ANIMALS)

Heart monitoring pads are applied to Dylan the Chimpanzee whilst cardiologist Eric Stohr of Cardiff Metropolitan University carries out a cardio ultrasound examination at Chester Zoo in Liverpool, northern England, March 26, 2012. The tests are part of a international programme looking into the heart conditions of great apes.REUTERS/Phil Noble (BRITAIN - Tags: ENVIRONMENT SOCIETY ANIMALS)

Veterinary staff monitor Dylan the Chimpanzee whilst cardiologist Eric Stohr of Cardiff Metropolitan University carries out a cardio ultrasound examination at Chester Zoo in Liverpool, northern England, March 26, 2012. The tests are part of a international programme looking into the heart conditions of great apes.REUTERS/Phil Noble (BRITAIN - Tags: ENVIRONMENT SOCIETY ANIMALS)

Veterinary staff monitor Dylan the Chimpanzee as cardiologist Eric Stohr of Cardiff Metropolitan University carries out a cardio ultrasound examination at Chester Zoo in Liverpool, northern England, March 26, 2012. The tests are part of a international programme looking into the heart conditions of great apes.REUTERS/Phil Noble (BRITAIN - Tags: ENVIRONMENT SOCIETY ANIMALS)

Cardiologist Dr. Thao Nguyen gestures as she testifies during Dr. Conrad Murray's trial in the death of pop star Michael Jackson in Los Angeles October 3, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT CRIME LAW)

Cardiologist Dr. Thao Nguyen testifies during Dr. Conrad Murray's trial in the death of pop star Michael Jackson in Los Angeles October 3, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT CRIME LAW)

Cardiologist Dr. Thao Nguyen testifies during Dr. Conrad Murray's trial in the death of pop star Michael Jackson in Los Angeles October 3, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT CRIME LAW)

Cardiologist Dr. Thao Nguyen smiles toward the jury box as she testifies during Dr. Conrad Murray's trial in the death of pop star Michael Jackson in Los Angeles October 3, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT CRIME LAW)

Cardiologist Dr. Thao Nguyen smiles toward the jury box as she testifies during Dr. Conrad Murray's trial in the death of pop star Michael Jackson in Los Angeles October 3, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT CRIME LAW)

Kuwaiti Interventional Cardiologist Dr Ibrahim Al-Rashdan (R) performs a PCI (Percutaneous Coronary Intervention) stent implantation surgery during a satellite transmission, at the Chest Diseases Hospital in Kuwait City May 18, 2011, aided by Dr Atef Habashy and main nurse Dia Ibrahim (L). The surgery was transmitted live via satellite to an audience at the EuroPCR 2011 Cardiovascular Conference held in Paris. REUTERS/Stephanie McGehee (KUWAIT - Tags: HEALTH SCI TECH)

Cardiologist Valentin Fuster (L) and chef Ferran Adria pose for photographers before presenting a book they co-authored called "La Cocina de Salud" (Healthy Food) in a hotel in Madrid November 2, 2010. REUTERS/Sergio Perez (SPAIN - Tags: HEALTH SOCIETY)

Cardiologist Valentin Fuster (L) and chef Ferran Adria pose for photographers before presenting a book they co-authored called "La Cocina de Salud" (Healthy Food) in a hotel in Madrid November 2, 2010. REUTERS/Sergio Perez (SPAIN - Tags: HEALTH SOCIETY)

Cardiologist Valentin Fuster (L) and chef Ferran Adria pose for photographers before presenting a book they co-authored called "La Cocina de Salud" (Healthy Food) in a hotel in Madrid November 2, 2010. REUTERS/Sergio Perez (SPAIN - Tags: HEALTH SOCIETY)

Cardiologist Valentin Fuster takes his seat before presenting a book he co-authored called "La Cocina de Salud" ("Healthy Food") in a hotel in Madrid November 2, 2010. REUTERS/Sergio Perez (SPAIN - Tags: HEALTH SOCIETY)

One-year-old Naeema lies at her mother's feet at a college converted into emergency shelter for flood victims in Charsadda, located in Pakistan's northwest Khyber-Pakhtunkhwa Province, August 17, 2010. As Pakistan's floods began swallowing up Bakhmina Said's mud-brick home, she grabbed medical records describing daughter's heart condition and ran. Eighteen days later, one-year-old Naeema sleeps on a mat in sweltering heat at a camp, with no fan and no access to a cardiologist, at risk of catching other potentially fatal diseases such as cholera in cramped un-hygienic conditions. REUTERS/Tim Wimborne (PAKISTAN - Tags: DISASTER HEALTH POLITICS)

One-year-old Naeema lies at her mother's feet at a college converted into emergency shelter for flood victims in Charsadda, located in Pakistan's northwest Khyber-Pakhtunkhwa Province, August 17, 2010. As Pakistan's floods began swallowing up Bakhmina Said's mud-brick home, she grabbed medical records describing daughter's heart condition and ran. Eighteen days later, one-year-old Naeema sleeps on a mat in sweltering heat at a camp, with no fan and no access to a cardiologist, at risk of catching other potentially fatal diseases such as cholera in cramped un-hygienic conditions. REUTERS/Tim Wimborne (PAKISTAN - Tags: DISASTER HEALTH POLITICS)

The flood damaged medical records (R) of one-year-old Naeema are inspected as she lies at the feet of her mother and siblings at a college converted into emergency shelter for flood victims in Charsadda, located in Pakistan's northwest Khyber-Pakhtunkhwa Province, August 17, 2010. As Pakistan's floods began swallowing up Bakhmina Said's mud-brick home, she grabbed medical records describing daughter's heart condition and ran. Eighteen days later, one-year-old Naeema sleeps on a mat in sweltering heat at a camp, with no fan and no access to a cardiologist, at risk of catching other potentially fatal diseases such as cholera in cramped un-hygienic conditions. REUTERS/Tim Wimborne (PAKISTAN - Tags: DISASTER HEALTH POLITICS)

Cardiologist Dr. Alan Schwartz addresses reporters about the condition of Former US President Bill Clinton who was hospitalized earlier today, outside the Columbia Campus of New York Presbyterian Hospital is seen in New York February 11, 2010. Clinton was recovering well on Thursday from a successful procedure to open a blocked artery in his heart after he had experienced chest discomfort, his doctor said.
REUTERS/Jessica Rinaldi (UNITED STATES - Tags: POLITICS HEALTH)

Cardiologist Dr. Alan Schwartz addresses reporters about the condition of Former US President Bill Clinton who was hospitalized earlier today, outside the Columbia Campus of New York Presbyterian Hospital is seen in New York February 11, 2010. Clinton was recovering well on Thursday from a successful procedure to open a blocked artery in his heart after he had experienced chest discomfort, his doctor said.
REUTERS/Jessica Rinaldi (UNITED STATES - Tags: POLITICS HEALTH IMAGES OF THE DAY)

Cardiologist Dr. Alan Schwartz addresses reporters about the condition of Former US President Bill Clinton who was hospitalized earlier today, outside the Columbia Campus of New York Presbyterian Hospital is seen in New York February 11, 2010. Clinton was recovering well on Thursday from a successful procedure to open a blocked artery in his heart after he had experienced chest discomfort, his doctor said.
REUTERS/Jessica Rinaldi (UNITED STATES - Tags: POLITICS HEALTH)

Dr. Conrad Murray arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray is greeted by well-wishers outside the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray is greeted by well-wishers outside the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray (R) is greeted by Reverend F.N. Williams as he arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray arrives at the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray is greeted by well-wishers outside the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Dr. Conrad Murray is greeted by well-wishers outside the Armstrong Medical Clinic in Houston November 23, 2009. The cardiologist plans to resume work for the first time since the death of pop star Michael Jackson. REUTERS/Richard Carson (UNITED STATES HEALTH ENTERTAINMENT)

Members of the media interview Julyen Struyven, a cardiologist who attempted to revive the pilot aboard the Continental 61 flight, at Newark Liberty International Airport in New Jersey June 18, 2009. The pilot died in mid-flight and the plane landed safely near New York City under the control of two co-pilots, authorities said on Thursday. REUTERS/Eric Thayer (UNITED STATES SOCIETY TRANSPORT)

Members of the media interview Julyen Struyven, a cardiologist who attempted to revive the pilot aboard the Continental 61 flight, at Newark Liberty International Airport in New Jersey June 18, 2009. The pilot died in mid-flight and the plane landed safely near New York City under the control of two co-pilots, authorities said on Thursday. REUTERS/Eric Thayer (UNITED STATES SOCIETY TRANSPORT)

Dr. Eric J. Topol, an American cardiologist, geneticist, and researcher, speaks at the CTIA Wireless 2009 convention in Las Vegas, Nevada April 2, 2009. REUTERS/David Becker (UNITED STATES BUSINESS)

Guitarist Sergi Magio (L) and sound technician Hermes Bo, who works with Argentine singer, Sergio Denis, wait for news of Denis after he suffered a health crisis and was placed in intensive care, outside the San Roque hospital in Asuncion May 14, 2007. Denis was rushed to the hospital earlier in the day with what was initially considered to be a heart attack, but is now believed to be suffering an abdominal hemorrhage, the hospital's head cardiologist Dr. Gustavo Olmedo said in a news conference. REUTERS/Jorge Adorno (PARAGUAY)

Members of the medical staff of the San Roque hospital (L-R) doctors Gustavo Olmedo, Hugo Gomez and Cesar Gaona attend a news conference, about the condition of Argentine singer Sergio Denis who is in critical condition in the hospital's intensive care unit, in Asuncion May 14, 2007. Denis was rushed to the hospital earlier in the day with what was initially considered to be a heart attack, but is now believed to be suffering an abdominal hemorrhage, the hospital's head cardiologist Dr. Olmedo said. REUTERS/Jorge Adorno (PARAGUAY)

A view of the San Roque hospital in Asuncion May 14, 2007, where Argentine singer Sergio Denis is in critical condition in intensive care. Denis was rushed to the hospital earlier in the day with what was initially considered to be a heart attack, but is now believed to be suffering an abdominal hemorrhage, the hospital's head cardiologist Dr. Gustavo Olmedo said in a news conference. REUTERS/Jorge Adorno (PARAGUAY)

Cardiologist Dirgham Abu Ramadan (3rd L) speaks to family members of a patient in a hospital in the West Bank city of Ramallah January 28, 2007. The German doctor of Palestinian origin, who has worked in the occupied West Bank for years, said on Saturday that Israel threatened to deport him. An Israeli official said Abu Ramadan had been told three months ago to apply for a permit. "We told him, apply for a work permit and you will get it immediately," Shlomo Dror, an Israeli Defence Ministry spokesman said. "We told him yesterday (Friday), come on Sunday and we will give you a work permit." REUTERS/Loay Abu Haykel (WEST BANK)

Cardiologist Dirgham Abu Ramadan looks at an X-ray at a hospital in the West Bank city of Ramallah January 28, 2007. The German doctor of Palestinian origin, who has worked in the occupied West Bank for years, said on Saturday that Israel threatened to deport him. An Israeli official said Abu Ramadan had been told three months ago to apply for a permit. "We told him, apply for a work permit and you will get it immediately," Shlomo Dror, an Israeli Defence Ministry spokesman said. "We told him yesterday (Friday), come on Sunday and we will give you a work permit." REUTERS/Loay Abu Haykel (WEST BANK)

Cardiologist Dirgham Abu Ramadan (L) tends to a patient in a hospital in the West Bank city of Ramallah January 28, 2007. The German doctor of Palestinian origin, who has worked in the occupied West Bank for years, said on Saturday that Israel threatened to deport him. An Israeli official said Abu Ramadan had been told three months ago to apply for a permit. "We told him, apply for a work permit and you will get it immediately," Shlomo Dror, an Israeli Defence Ministry spokesman said. "We told him yesterday (Friday), come on Sunday and we will give you a work permit." REUTERS/Loay Abu Haykel (WEST BANK)

Cardiologist Dirgham Abu Ramadan (L) tends to a patient in a hospital in the West Bank city of Ramallah January 28, 2007. The German doctor of Palestinian origin, who has worked in the occupied West Bank for years, said on Saturday that Israel threatened to deport him. An Israeli official said Abu Ramadan had been told three months ago to apply for a permit. "We told him, apply for a work permit and you will get it immediately," Shlomo Dror, an Israeli Defence Ministry spokesman said. "We told him yesterday (Friday), come on Sunday and we will give you a work permit." REUTERS/Loay Abu Haykel (WEST BANK)