Britain's Prime Minister Theresa May wears a plaster on her ring finger as gives her speech on the final day of the annual Conservative Party Conference in Birmingham, Britain, October 5, 2016. REUTERS/Toby Melville

Soccer Football - FC Barcelona vs Sevilla - Copa del Rey Final - Vicente Calderon, Madrid, Spain - 22/5/16
Sevila's Michael Krohn Dehli arrives before the match
Reuters / Juan Medina
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Soccer Football - FC Barcelona vs Sevilla - Copa del Rey Final - Vicente Calderon, Madrid, Spain - 22/5/16
Sevila's Michael Krohn Dehli arrives before the match
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Carson Campbell shows his support for U.S. Republican presidential candidate Donald Trump before a campaign rally at Oral Roberts University in Tulsa, Oklahoma, January 20, 2016. REUTERS/Nick Oxford

A boy from Lower Dir who broke both his arms and legs during the earthquake lies in a bed at Lady Reading Hospital in Peshawar, Pakistan October 29, 2015. REUTERS/Fayaz Aziz

A boy, who was injured during an earthquake, receives first aid at the Lady Reading hospital in Peshawar, Pakistan October 28, 2015. Rescuers on Tuesday rushed to deliver relief aid to victims of the massive earthquake that hit northern Afghanistan and Pakistan, killing at least 275 people over a wide swath of mostly mountainous terrain. REUTERS/Fayaz Aziz TPX IMAGES OF THE DAY

Ropes weighted down with water bottles are used to apply traction to the legs of an injured girl after she fractured them during Saturday's earthquake, at a hospital in Kathmandu, Nepal, April 29, 2015. REUTERS/Danish Siddiqui TPX IMAGES OF THE DAY

U.S. Secretary of Defense Chuck Hagel listens during his testimony at the House Armed Services Committee on Capitol Hill in Washington, November 13, 2014. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS MILITARY CONFLICT HEADSHOT TPX IMAGES OF THE DAY)

A civilian, wounded by the impact of a rocket, sits on his bed at "Hopital de l'Amitie" in Bangui February 20, 2014. Heavy fighting erupted near the airport in Central African Republic's capital Bangui on Wednesday, as Christian militia tried to block the evacuation of Muslims and disrupted a visit by a top United Nations aid official, witnesses said. REUTERS/Luc Gnago (CENTRAL AFRICAN REPUBLIC - Tags: POLITICS CIVIL UNREST)

A patient who arrived at Bir Hospital in Kathmandu to remove his leg's plaster cast, stands outside after the Nepal Medical Association (NMA) halted health care services across the country in protest against the government's decision to appoint Dr Shashi Sharma as the new dean of Institute of Medicine (IOM), January 20, 2014. The NMA has been demanding to end political interference in the health sector in Kathmandu, according to local media. REUTERS/Navesh Chitrakar (NEPAL - Tags: HEALTH POLITICS CIVIL UNREST)

Cathey Park of Cambridge, Massachusetts wears a cast for her broken wrist with "I Love Obamacare" written upon it prior to U.S. President Barack Obama's arrival to speak about health insurance at Faneuil Hall in Boston October 30, 2013.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS)

A gallery assistant lays out dental casts from artist Gina Czarnecki's The Wasted Works exhibition, at the Science and Industry Museum in Manchester, northern England October 11, 2012. The exhibition, part of Manchester Science Week, explores the taboos in society around waste body parts, and how milk teeth, liposuction fat and hip joints left over after operations could be used for stem cell regeneration. REUTERS/Phil Noble (BRITAIN - Tags: ENTERTAINMENT HEALTH SOCIETY)

A cast is seen on the right foot of Chen Guangcheng, the blind Chinese dissident and legal advocate who recently sought asylum in the United States, during an interview in New York May 24, 2012. Blind Chinese activist Chen, who flew to the United States last week, said on Thursday China's handling of the local officials who harassed and abused him and his family will determine whether the country can begin to achieve rule of law. REUTERS/Shannon Stapleton (UNITED STATES SOCIETY - Tags: POLITICS)

Muhammad, a 17-year-old Syrian man brought into Jordan for medical treatment, lies on a bed after undergoing multiple reconstructive surgeries at the Red Crescent Hospital in Amman February 9, 2012. Muhammad covered his face to conceal his identity. Doctors at the hospital said tens of young Syrians injured during the violence in their country are currently receiving treatment at the hospital run by Paris-based Medicins Sans Frontieres (MSF). REUTERS/Ali Jarekji (JORDAN - Tags: CIVIL UNREST POLITICS SOCIETY HEALTH)

Malak Al Shami, 6, who had a leg amputated after her house was hit by a Grad rocket, listens to her aunt as she sits on a wheelchair at a hospital in the west Libyan city of Misrata June 3, 2011. Malak's house was hit by a rocket belonging to forces loyal to Libyan leader Muammar Gaddafi on May 13, 2011. She lost her sister Rodaina, 1, and her brother Mohamed, 3, on the same day of the incident. REUTERS/Zohra Bensemra (LIBYA - Tags: POLITICS CONFLICT)

A victim of a bomb explosion talks to a relative as medics transport him from a local hospital to an ambulance heading for Moscow, in the town of Domodedovo January 24, 2011. A suicide bomber killed at least 35 people at Russia's biggest airport on Monday in an attack that bore the hallmarks of militants fighting for an Islamist state in the north Caucasus region. REUTERS/Sergei Karpukhin (RUSSIA - Tags: POLITICS CRIME LAW DISASTER)

A doctor at the Virchow hospital in Berlin puts finishing touches to the plaster cast of Odarka Pannenberg, 66, who fractured wrist bones in both of her hands when she slipped on the icy pavement in front of her house in Berlin, January 6, 2011. The Berlin fire brigade declared a weather state of emergency on Thursday after more than 180 people were injured due to tumbles on black ice and airports in Germany's capital were forced to cancel flights. REUTERS/Thomas Peter (GERMANY - Tags: HEALTH)

England's Leon Baptiste wears a plaster decorated to resemble the England flag after competing in the men's 4x100 metre final at the Jawaharlal Nehru Stadium during the Commonwealth Games in New Delhi October 12, 2010. REUTERS/Suzanne Plunkett (INDIA - Tags: SPORT ATHLETICS)

England's Katherine Endicott stretches with a plaster decorated to resemble the England flag before the start of the women's 4x100 metre final at the Jawaharlal Nehru Stadium during the Commonwealth Games in New Delhi October 12, 2010. REUTERS/Suzanne Plunkett (INDIA - Tags: SPORT ATHLETICS)

Wounded supporters are seen at the headquarters of "Union des forces democratiques de Guinee" (UFDG), the party of former prime minister and presidential candidate Cellou Dalein Diallo, in Conakry June 25, 2010. At least 20 people were injured when supporters of two political parties hurled stones at each other in the village of Coyah in Guinea three days before an election, witnesses and a national guard source said on Thursday. REUTERS/Luc Gnago (GUINEA - Tags: POLITICS CIVIL UNREST IMAGES OF THE DAY)

An oral cancer patient attends a talk at the Sunshine Social Welfare Foundation, which gives advice how to cope with post-surgery maintenance, in Taipei, April 24, 2010. Close to half of oral cancer patients will need to undergo ablative surgery which will result in facial disfigurement that causes speech impairment and oral secretions management difficulties. REUTERS/Nicky Loh (TAIWAN - Tags: HEALTH SOCIETY)

A rubber orthopaedic leg (L) is displayed along with plaster casts of patients' legs in the International Committee of the Red Cross orthopaedic centre in Herat November 5, 2009. REUTERS/Morteza Nikoubazl (AFGHANISTAN HEALTH)

Venus Williams of the U.S. waits on the return from Magdalena Rybarikova of Slovakia with her left knee wrapped during their match at the U.S. Open tennis tournament in New York, September 4, 2009. REUTERS/Jeff Zelevansky (UNITED STATES SPORT TENNIS)

Pope Benedict XVI, wearing a cast on his broken wrist, blesses devotees during his Sunday Angelus prayer at his summer residence of Castelgandolfo, south of Rome, August 2, 2009. REUTERS/Max Rossi (ITALY RELIGION)

A fan cheers as players of Liverpool arrive at a hotel in Bangkok July 20, 2009. Liverpool will play against Thailand in an exhibition match on Wednesday. REUTERS/Chaiwat Subprasom (THAILAND SPORT SOCCER)

Pope Benedict XVI greets the crowd during his Angelus prayers in Romano Canavese, near Ivrea, northern Italy July 19, 2009. The Pope underwent minor surgery on July 17, 2009 after he slipped in the bath and broke his right wrist while on holiday in northern Italy. The Vatican said that the pope would have to wear a cast for about a month. REUTERS/Alessandro Garofalo (ITALY RELIGION IMAGES OF THE DAY)

Carrie Underwood arrives for the finale of Season 8 of "American Idol" in Los Angeles May 20, 2009. REUTERS/Phil McCarten (UNITED STATES ENTERTAINMENT)

A US army soldier receives medical treatment by German medics for his broken hand, at a rescue center of the German armed forces Bundeswehr at their camp in Kunduz, northern Afghanistan April 17, 2009. REUTERS/Kai Pfaffenbach (AFGHANISTAN MILITARY POLITICS)

An injured man sits in the garden of his destroyed house after an earthquake in the Italian village of Onna April 6, 2009. A powerful earthquake struck a huge swath of central Italy as residents slept on Monday morning, killing more than 50 people and making up to 50,000 homeless. REUTERS/Chris Helgren (ITALY DISASTER)

Tamil Thebora, (L) a one year old girl who was injured in the war zone in north-eastern Sri lanka, sits on a bed in the Lady Ridgeway hospital in Colombo, as he mother stands nearby. February 25, 2009. Any additional information as where this girl is from and how she was injured, was blocked by a hospital official who said that all 15 children who came to this hospital from the war zone were injured because of Tamil Tiger rebel fire. Children and other civilians are trapped in the war zone amid fighting between the Liberation Tamil Tigers Eelam separatists and Sri Lanka's army where both sides blame each other for civilian causalities. The 15 injured children were brought for special treatment in the Lady Ridgeway hospital in Colombo, the hospital director said. REUTERS/Nir Elias (SRI LANKA)

Jean-Pierre Kalikunshe, 10, (L) and Espoir Kangeshe, 6, who have had surgery to correct leg deformities lie together on a bed the Heal Africa hospital in Goma in eastern Congo, February 10, 2009. Kalikunshe and Kangeshe are among some 70 children looked after by Stand Proud, a charity that assists children suffering from polio and other leg defects in war-ravaged Democratic Republic of Congo, where 15 years of war has devastated public health services. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

Delphin Kagushire, 10, talks to a friend after they both had surgery to correct leg deformities at the Heal Africa hospital in Goma, February 10, 2009. Kagushire is one of some 70 children looked after by Stand Proud, a charity that assists children suffering from polio and other leg defects in war-ravaged Democratic Republic of Congo, where 15 years of war has devastated public health services. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

Boys who have had surgery to repair deformed legs gather in the hallway of the Heal Africa hospital in Goma, February 10, 2009. The boys are among some 70 children looked after by Stand Proud, a charity that assists children suffering from polio and other leg defects in war-ravaged Democratic Republic of Congo, where 15 years of war has devastated public health services. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

Jean-Pierre Kalikunshe (L), 10, comforts his friend Espoir Kangeshe, 6, both of whom have had surgery to correct leg deformities, at the Heal Africa hospital in Goma, February 10, 2009. Kalikunshe and Kangeshe are among some 70 children looked after by Stand Proud, a charity that assists children suffering from polio and other leg defects in war-ravaged Democratic Republic of Congo, where 15 years of war has devastated public health services. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

Jean-Pierre Kalikunshe, 10, who has had surgery to correct a deformed leg, sits on a bed at the Heal Africa hospital in Goma in eastern Congo, February 10, 2009. Kalikunshe is one of some 70 children looked after by Stand Proud, a charity that assists children suffering from polio and other leg defects in war-ravaged Democratic Republic of Congo, where 15 years of war has devastated public health services. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

Reuters reporter Jon Decker shows his bandaged finger after he was bitten by President George W. Bush's dog Barney at the White House in Washington, November 6, 2008. Decker was treated by the White House physician after the Scottish terrier bit Decker when Decker reached to pet him. REUTERS/Larry Downing (UNITED STATES)

Cindy McCain, wife of US Republican presidential candidate Senator John McCain (R-AZ), holds her injured arm as they campaign in Washington, Pennsylvania August 30, 2008. REUTERS/John Gress (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)

Heather Bown (C) of the U.S. spikes against Sheilla Castro (L) and Fabiana Claudino of Brazil during their women's final volleyball match at the Beijing 2008 Olympic Games, August 23, 2008. REUTERS/Alexander Demianchuk (CHINA)

Kimberly Glass of the U.S. watches during their women's final volleyball match against Brazil at the Beijing 2008 Olympic Games, August 23, 2008. REUTERS/Alexander Demianchuk (CHINA) BEST QUALITY AVAILABLE

Actress Bai Ling wears bandaids on her shins at the movie premiere of "The X-Files: I Want to Believe" at the Grauman's Chinese theatre in Hollywood, California July 23, 2008. The movie opens in the U.S. on July 25. The bandaid on the left reads "Give more love to the Olympics". REUTERS/Mario Anzuoni (UNITED STATES) (BEIJING OLYMPICS 2008 PREVIEW)

Two-year-old Rimo Das, a Thalassemia patient, drinks milk on his mother's lap inside the office of a non-government organisation (NGO) in the eastern Indian city of Kolkata July 15, 2008. Das' parents on Monday said their son was not given proper attention by the medical staff of a government-run hospital after he was refused admission for a blood transfusion. REUTERS/Parth Sanyal (INDIA)

Two-year-old Rimo Das, a Thalassemia patient, drinks milk inside the office of a non-government organisation (NGO) in the eastern Indian city of Kolkata July 15, 2008. Das' parents on Monday said their son was not given proper attention by the medical staff of a government-run hospital after he was refused admission for a blood transfusion. REUTERS/Parth Sanyal (INDIA)

Michael Ballack, captain of the German national soccer team, arrives at the Fan Mile public viewing area in Berlin, June 30, 2008. Around 100,000 people attended the reception for the team in the German capital on Monday. REUTERS/Gero Breloer/Pool (GERMANY)

Earthquake survivors receive medical treatment from a Russian medical team in the city of Pangzhou, northwest of Chengdu in China's Sichuan province May 23, 2008. More than 55,000 people were killed and 290,000 injured in an massive earthquake in Sichuan May 12, with 24,900 still missing, government reported on Friday. REUTERS/Bobby Yip (CHINA)

Opposition party Movement for Democratic Change (MDC) supporters from the rural south of the country show their broken limbs from an assault in the capital Harare May 3, 2008. Rights groups and churches have confirmed MDC charges that there is a massive campaign of violence against opposition supporters following the disputed election held on March 29. REUTERS/Howard Burditt (ZIMBABWE)

A Haitian, wounded by a bullet during protests, waits at a hospital in Port-au-Prince April 10, 2008. Taxis, vendors and shoppers returned to the debris-strewn streets of the Haitian capital on Thursday after the president appealed for an end to food riots, but the government came under fire from opposition politicians for not doing enough. REUTERS/Eduardo Munoz (HAITI)

A child holds a doll while resting on a stretcher after being diagnosed with dengue at Albert Schweitzer hospital in Rio de Janeiro March 25, 2008. According to the health ministry, more than 30,000 dengue cases were reported since the start of 2008. Forty-eight people have died during the period. REUTERS/Bruno Domingos (BRAZIL)

A resident, who was wounded in a roadside bomb attack, receives treatment in a hospital in Baghdad March 18, 2008. The attack killed one person and wounded 11 others, police said. REUTERS/Kareem Raheem (IRAQ)

A resident, who was wounded in a roadside bomb attack, receives treatment in a hospital in Baghdad March 18, 2008. The attack killed one person and wounded 11 others, police said. REUTERS/Kareem Raheem (IRAQ)

Venezuela's Alejandra Fuentes shows her Olympic tattoo during the women's Springboard one-metre Diving final at the South American Aquatics Championships in Sao Paulo March 12, 2008. REUTERS/Sergio Moraes (BRAZIL)

Justin Noynay has his upper lips covered with bandage after surgery during the "Operation Smile" at a hospital in Makati financial district in Manila November 6, 2007. Operation Smile is projected to provide free surgery on about 500 children inflicted with cleft lips, cleft palates, and other facial deformities in the Philippines
REUTERS/Cheryl Ravelo (PHILIPPINES)

Reuters correspondent in Somalia Sahal Abdulle is treated after the car he was riding was blown up in an explosion in Mogadishu, August 11, 2007. Targeted attacks on reporters continue to rise, but deadly violence has been a daily occurrence in Mogadishu since the New Year when an Islamist movement was ousted by Somali government troops and Ethiopian forces. Picture taken August 11, 2007.To match feature WITNESS-SOMALIA/JOURNALIST. REUTERS/Edward Ou (SOMALIA)

A wounded Iraqi child cries as U.S. doctors treat his wounds at the emergency room of 28th Combat Support hospital in Baghdad August 21, 2007. The 28th Combat Support Hospital, based in Baghdad's fortified Green zone, is one of the busiest military emergency rooms in the world. Medics there treat U.S. and Iraqi combat casualties and some Iraqi civilians. REUTERS/Damir Sagolj (IRAQ)

A young Afghan boy with both legs in plaster casts, is pictured at a hospital for children in Kabul August 23, 2005. REUTERS/Hannibal Hanschke (AFGHANISTAN)

David Beckham's children Romeo (R) and Brooklyn attend Real Madrid's Spanish First Division soccer victory over Real Mallorca at the Santiago Bernabeu stadium in Madrid June 17, 2007. REUTERS/Victor Fraile (SPAIN)

A Palestinian man carries his wounded son after fleeing from Nahr al-Bared refugee camp and arriving at Beddawi refugee camp in northern Lebanon May 23, 2007. Thousands of Palestinians fled a besieged refugee camp on Wednesday after a fragile truce halted fighting between the Lebanese army and al Qaeda-inspired militants. REUTERS/ Mohamed Azakir (LEBANON)

Phoenix Suns guard Steve Nash, with an injured nose, warms-up before Game 2 of the NBA Western Conference semifinals against the San Antonio Spurs in Phoenix, Arizona, May 8, 2007. REUTERS/Jeff Topping (UNITED STATES)

Spanish bullfighter Cayetano Rivera adjusts his hat before the start of a bullfight at the Malagueta bullring in Malaga, southern Spain, April 8, 2007. REUTERS/Jon Nazca (SPAIN)

Ireland's captain Trent Johnston trains with a shoulder injury during a World Cup cricket practice session in Georgetown, March 29, 2007. MOBILES OUT, EDITORIAL USE ONLY REUTERS/Darren Staples (GUYANA)

A child afflicted by polio is reflected in rainwater at the International Polio Victim Response Committee (IPVRC) compound in Democratic Republic of Congo's capital Kinshasa November 20, 2006. Results from historic elections in Congo were announced last week as the country tries to end years of conflict that has left the country destitute with a non-functional health care system. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)