Head veterinary surgeon Hulya Hartoka stitches the leg of a race horse following keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul April 6, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Head veterinary surgeon Hulya Hartoka (L) and veterinary surgeon Dursun Dogan bandage the leg of a racehorse following keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul April 6, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Veterinary technician Gokhan Boyraz shaves a racehorse's leg as he prepares it for keyhole surgery to remove bone fragments at Veliefendi equine hospital in Istanbul March 3, 2015. A state-of-the-art hospital for hundreds of horses run by the Jockey Club of Turkey at Istanbul's Veliefendi racecourse is the country's oldest and biggest. Grooms and trainers at the equine clinic work with vets and nurses while owners hope their prize runners, often worth hundreds of thousands of dollars, will recover quickly and then run faster still. REUTERS/Murad Sezer

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Media swarm around an ambulance transporting Uruguayan striker Luis Suarez, who left the hospital after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after suffering a knee surgery in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

Uruguayan striker Luis Suarez leaves the hospital in a wheel chair after surgery due to a knee injury in Montevideo May 22, 2014. Suarez promised Uruguay fans he would be at the World Cup finals after successful keyhole surgery on a knee injury on Thursday. Suarez, who helped Uruguay to fourth place at the last World Cup in South Africa four years ago, will need 15 to 20 days to recover but Uruguay team doctors are not ruling him out of the tournament in Brazil, which runs from June 12 to July 13. REUTERS/Andres Stapff (URUGUAY - Tags: SPORT SOCCER) 

A girl walks past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS SOCIETY) 

A newspaper vendor holds up a newspaper with a headline on former South African President Nelson Mandela in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH) 

A women and her child walk past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH) 

An elderly women shops from a makeshift store as a young girl walks past portraits of former South African President Nelson Mandela, painted by O.J. Zwane, in Soweto February 26, 2012. Mandela remained in hospital on Sunday after keyhole surgery that officials said had left him in no danger but increased South Africans' concerns for their aging former president. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS HEALTH TPX IMAGES OF THE DAY) 

Dr. Michael Snyder and First Surgical Assistant Tony Covello place a Lap-Band using laproscopic instruments inserted into the belly of Jazmine Raygoza at Rose Medical Center in Denver June 20, 2011. After trying multiple diets and exercise, Jazmine, 17, decided on the Lap-Band treatment with the encouragement of her mother, who recently had a gastric bypass herself. About 17 percent of American kids and teens are obese, according to the Centers for Disease Control and Prevention. Picture taken June 20, 2011. REUTERS/Rick Wilking (UNITED STATES - Tags: HEALTH SOCIETY) 

Bariatric surgeon Dr. Michael Snyder performs a laparoscopic gastric bypass, with five ports inserted in a semi-circle on Carolyn Dawson inflated abdomen, at Rose Medical Center, in Denver August 30, 2010. Snyder has completed some 451 bariatric surgeries in the past year. Picture taken August 30, 2010. REUTERS/Rick Wilking (UNITED STATES - Tags: HEALTH) 

Boys peep through a door's keyhole during a mass mass circumcision ceremony at a mosque in Kuala Lumpur May 31, 2009. About 50 boys, aged between 7 and 11 years old, were given a grand welcome to a mass circumcision surgery, as some consider circumcision to be a celebration of reaching manhood. Circumcision is compulsory for Muslim boys under the Sharia law (Islamic Law). REUTERS/Zainal Abd Halim (MALAYSIA SOCIETY RELIGION)