French paediatric neurosurgeon Georg Dorfmuller (61-year-old) poses in a room at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

French paediatric neurosurgeon Georg Dorfmuller (61-year-old) practices re-education exercises with physiotherapist Laura Ciocanas at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

French paediatric neurosurgeon Georg Dorfmuller (61-year-old) practices re-education exercises with physiotherapist Laura Ciocanas at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

French paediatric neurosurgeon Georg Dorfmuller (61-year-old) poses in a room at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

French paediatric neurosurgeon Georg Dorfmuller (61-year-old) practices re-education exercises with physiotherapist Laura Ciocanas at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

French paediatric neurosurgeon Georg Dorfmuller (61-year-old) poses in a room at the post COVID-19 unit of the Le Parc Hospital in Taverny near Paris during the outbreak of the coronavirus disease (COVID-19) in France, April 30, 2020. REUTERS/Benoit Tessier

Klaus-Michael Debatin, medical director of paediatrics of Ulm's University Clinic, speaks at a news conference in Ulm, Germany, January 30, 2020. REUTERS/Andreas Gebert

General view of the paediatric clinic of the Ulm University Clinic in Ulm, Germany, January 30, 2020. REUTERS/Andreas Gebert

General view of the paediatric clinic of the Ulm University Clinic in Ulm, Germany, January 30, 2020. REUTERS/Andreas Gebert

General view of the paediatric clinic of the Ulm University Clinic in Ulm, Germany, January 30, 2020. REUTERS/Andreas Gebert

General view of the paediatric clinic of the Ulm University Clinic in Ulm, Germany, January 30, 2020. REUTERS/Andreas Gebert

Kenai Rivero who is two months old and has been diagnosed with malnutrition, is checked by a doctor during a special event for children with nutritional problems organised by Catholic relief agency Caritas, at a church in Barquisimeto, Venezuela, August 10, 2019. "I went to the paediatric hospital, and they gave me an appointment for a month later because the nutritionist was on leave." "I went to the nutrition institute, and they gave me an appointment for the Monday of the following week," said Francys when describing how she has been looking for help with her son. "I'm looking everywhere to get him checked because I can't stay at home waiting and seeing as he doesn't gain weight." REUTERS/Carlos Garcia Rawlins SEARCH "VENEZUELA MALNUTRITION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

The grandmother of Palestinian boy Yehia al-Samna, 8, watches him as he undergoes a kidney dialysis at a public paediatric hospital in Gaza City, March 28, 2017. REUTERS/Mohammed Salem SEARCH "GAZA HEALTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Palestinian boy Mohammed al-Laham undergoes a kidney dialysis at a public paediatric hospital in Gaza City, March 28, 2017. REUTERS/Mohammed Salem SEARCH "GAZA HEALTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Palestinian boy Mohammed al-Laham undergoes a kidney dialysis at a public paediatric hospital in Gaza City, March 28, 2017. REUTERS/Mohammed Salem SEARCH "GAZA HEALTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The grandmother of Palestinian boy Yehia al-Samna, 8, watches him as he undergoes a kidney dialysis at a public paediatric hospital in Gaza City, March 28, 2017. REUTERS/Mohammed Salem SEARCH "GAZA HEALTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A woman rests in bed with her children in the paediatric ward at the Medecins Sans Frontieres (MSF) hospital inside the United Nations Mission in South Sudan (UNMISS) base, Bentiu, Rubkona County, South Sudan March 23, 2017. Picture taken March 23, 2017. REUTERS/Siegfried Modola TPX IMAGES OF THE DAY

A mother with her child sleep in a bed of the paediatric ward of an hospital in the United Nations Mission in South Sudan (UNMISS) Protection of Civilian site (PoC), outside the capital Juba, South Sudan, January 24, 2017. Picture taken January 24, 2017. REUTERS/Siegfried Modola

Pope Francis gives medicine to a young patient while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis talks with a young patient while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

A young patient touches Pope Francis during his visit to pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis embraces young patients while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis embraces young patients while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis talks with people and young patients while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis embraces a young patient while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis talks with people while visiting pediatric hospital "Federico Gomez" in Mexico City, February 14, 2016. REUTERS/Max Rossi

Pope Francis talks with a young patient while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

Pope Francis puts rosary beads on a patient while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

Pope Francis kisses a child while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

Pope Francis kisses a girl while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

Pope Francis touches a girl while visiting pediatric hospital "Federico Gomez" in Mexico, February 14, 2016. REUTERS/Max Rossi

A member of the Mountain Rescue Service dressed in a Santa Claus suit sits before descending from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

Members of the Mountain Rescue Service dressed in a Santa Claus suits waves to patients as they descend from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

A member of the Mountain Rescue Service dressed in a Santa Claus suit waves to patients as he descends from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

A boy waves to members of the Mountain Rescue Service dressed in a Santa Claus suit as they descend from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

A member of the Mountain Rescue Service dressed in a Santa Claus suit descends from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

A member of the Mountain Rescue Service dressed in a Santa Claus suit waves to patients as he descends from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

Members of the Mountain Rescue Service dressed in a Santa Claus suits waves to patients as they descend from the roof of a pediatrics clinic in Ljubljana December 15, 2015. REUTERS/Srdjan Zivulovic

Paediatrician Giorgos Tomaras (R) vaccinates a young boy at a medical centre of the Greek delegation of the Doctors of the World in Perama, near Athens March 5, 2015. Greece's government submitted a bill to offer free food and electricity to thousands of poverty-stricken Greeks as its first legislative act in parliament, in a symbolic move to address what it calls a "humanitarian crisis". REUTERS/Alkis Konstantinidis (GREECE - Tags: POLITICS BUSINESS HEALTH SOCIETY POVERTY)

A member of the special police forces dressed in a Santa Claus suit waves to staff as he descends from the roof of a pediatrics clinic in Ljubljana December 16, 2014. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SOCIETY)

A member of the police special forces dressed as Santa Claus abseils from the roof of a paediatric clinic in Ljubljana December 16, 2014. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SOCIETY)

A member of the police special forces dressed as Santa Claus waves to a patient as he abseils from the roof of a paediatric clinic in Ljubljana December 16, 2014. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SOCIETY)

A member of the police special forces dressed in a Santa Claus suit waves to a patient as he abseils from the roof of a paediatric clinic in Ljubljana December 16, 2014. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: SOCIETY)

A Somali woman holds her malnourished child as they wait for medical tests at the paediatric ward of Banadir hospital in Mogadishu, April 28, 2014. REUTERS/Ismail Taxta (SOMALIA - Tags: HEALTH)

A Somali woman holds a malnourished child as they wait for medical attention at the paediatric ward of Banadir hospital in Mogadishu, April 28, 2014. REUTERS/Ismail Taxta (SOMALIA - Tags: HEALTH)

A malnourished child cries as he waits for medical care at the paediatric ward of Banadir hospital in Mogadishu April 28, 2014. REUTERS/Ismail Taxta (SOMALIA - Tags: HEALTH)

A Somali woman holds her malnourished child as they wait for medical tests at the paediatric ward of Banadir hospital in Mogadishu, April 28, 2014. REUTERS/Ismail Taxta (SOMALIA - Tags: HEALTH)

Father Mario Puppo adjusts a relic containing the blood of John Paul II at the chapel of the "Bambin Gesu" paediatric hospital in Rome April 26, 2014. Pope John XXIII, who reigned from 1958 to 1963 and called the modernizing Second Vatican Council, and Pope John Paul II, who reigned for nearly 27 years before his death in 2005 and whose trips around the world made him the most visible pope in history, will be declared saints by Pope Francis at an unprecedented twin canonization on Sunday. REUTERS/Alessandro Bianchi (ITALY - Tags: RELIGION)

A relic containing the blood of John Paul II is seen at the chapel of the "Bambin Gesu" paediatric hospital in Rome April 26, 2014. Pope John XXIII, who reigned from 1958 to 1963 and called the modernizing Second Vatican Council, and Pope John Paul II, who reigned for nearly 27 years before his death in 2005 and whose trips around the world made him the most visible pope in history, will be declared saints by Pope Francis at an unprecedented twin canonization on Sunday.
REUTERS/Alessandro Bianchi (ITALY - Tags: RELIGION)

Father Mario Puppo holds a relic containing the blood of John Paul II at the chapel of the "Bambin Gesu" paediatric hospital in Rome April 26, 2014. Pope John XXIII, who reigned from 1958 to 1963 and called the modernizing Second Vatican Council, and Pope John Paul II, who reigned for nearly 27 years before his death in 2005 and whose trips around the world made him the most visible pope in history, will be declared saints by Pope Francis at an unprecedented twin canonization on Sunday.
REUTERS/Alessandro Bianchi (ITALY - Tags: RELIGION)

A father and his child, who is suffering from malnutrition, share a bed at a paediatrics hospital in Bangui, Central African Republic, February 25, 2014. REUTERS/Camille Lepage (CENTRAL AFRICAN REPUBLIC - Tags: POLITICS CIVIL UNREST HEALTH)

A mother and her child, who is suffering from malnutrition, share a bed at a paediatrics hospital in Bangui, Central African Republic, February 25, 2014. REUTERS/Camille Lepage (CENTRAL AFRICAN REPUBLIC - Tags: POLITICS CIVIL UNREST HEALTH)

Children, suffering from malnutrition, and their mothers share beds at a paediatrics hospital in Bangui, Central African Republic, February 25, 2014. REUTERS/Camille Lepage (CENTRAL AFRICAN REPUBLIC - Tags: POLITICS CIVIL UNREST HEALTH)

A mother tends to her child, who is suffering from malnutrition, at a paediatrics hospital in Bangui, Central African Republic, February 25, 2014. REUTERS/Camille Lepage (CENTRAL AFRICAN REPUBLIC - Tags: POLITICS CIVIL UNREST HEALTH)

Sylvain Wamfeiga, 7, recovers from a broken leg as a result of skirmishes, at the Complex Paediatric Hospital in Bangui January 3, 2014. Violence in Central African Republic has uprooted nearly a million people, a fifth of the population, and is hampering aid efforts, particularly in the capital Bangui, the U.N. refugee agency (UNHCR) said on Friday. REUTERS/Andreea Campeanu (CENTRAL AFRICAN REPUBLIC - Tags: CIVIL UNREST RELIGION)

A boy recovers from a bullet wound at the Complex Paediatric Hospital in Bangui January 3, 2014. Violence in Central African Republic has uprooted nearly a million people, a fifth of the population, and is hampering aid efforts, particularly in the capital Bangui, the U.N. refugee agency (UNHCR) said on Friday. REUTERS/Andreea Campeanu (CENTRAL AFRICAN REPUBLIC - Tags: CIVIL UNREST RELIGION)

A boy rests on a wheelchair from wounds sustained in a grenade attack, at the Complex Paediatric Hospital in Bangui January 3, 2014. Violence in Central African Republic has uprooted nearly a million people, a fifth of the population, and is hampering aid efforts, particularly in the capital Bangui, the U.N. refugee agency (UNHCR) said on Friday. REUTERS/Andreea Campeanu (CENTRAL AFRICAN REPUBLIC - Tags: CIVIL UNREST RELIGION TPX IMAGES OF THE DAY)

A member of the special police force dressed in a Santa suit, descends from the roof of a paediatric clinic in Ljubljana, as part of a Christmas performance for patients of the clinic, December 18, 2013. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: CRIME LAW SOCIETY)

A girl waves to a member of the special police force dressed in a Santa suit, who descended from the roof of a paediatric clinic in Ljubljana, as part of a Christmas performance for patients of the clinic, December 18, 2013. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: CRIME LAW SOCIETY)

A member of the special police force dressed in a Santa suit descends from the roof of a paediatric clinic in Ljubljana, as part of a Christmas performance for patients of the clinic, December 18, 2013. REUTERS/Srdjan Zivulovic (SLOVENIA - Tags: CRIME LAW SOCIETY)