A wheelchair used by patients with kidney failure is seen at a dialysis centre at a hospital in the Red Sea port city of Hodeidah, Yemen November 28, 2018. Picture taken November 28, 2018. REUTERS/Abduljabbar Zeyad 

A physically disabled protester on a wheelchair takes part in a demonstration marking the International Day of Persons with Disabilities, in Athens, Greece December 3, 2018. REUTERS/Costas Baltas 

A wheelchair is seen thorugh a window inside a nursing home in Vienna, Austria, October 9, 2018. REUTERS/Heinz-Peter Bader 

Elderly people walk outisde a nursing home in Vienna, Austria, October 9, 2018. REUTERS/Heinz-Peter Bader 

A wheelchair is seen in an alley at Shati refugee camp in Gaza City March 14, 2018. Picture taken March 14, 2018. REUTERS/Mohammed Salem 

A patient is pushed down a corridor in Frimley Park Hospital near Camberley, Britain, January 4, 2018. REUTERS/Toby Melville 

Wheelchairs abandoned in the desert by displaced Iraqis as they flee their homes, while Iraqi forces battle with Islamic State militants in western Mosul, Iraq, February 28, 2017. REUTERS/Zohra Bensemra 

An injured man is pushed to an ambulance at the site of an accident with a truck at a Christmas market on Breitscheidplatz square near the fashionable Kurfuerstendamm avenue in the west of Berlin, Germany, December 19, 2016. REUTERS/Fabrizio Bensch

An injured man is pushed to an ambulance at the site of an accident with a truck at a Christmas market on Breitscheidplatz square near the fashionable Kurfuerstendamm avenue in the west of Berlin, Germany, December 19, 2016. REUTERS/Fabrizio Bensch

Ramona Febo-Boarman hugs her son Joey at their home in Bayamon, Puerto Rico, December 1, 2016. Picture taken December 1, 2016. To match Special Report USA-PUERTORICO/DISABILITY REUTERS/Alvin Baez 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (R) watches wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) poses with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

French Prime Minister Manuel Valls (C) speaks with wheelchair basketball players during an Interministerial Committee on Disability in Nancy, eastern France, December 2, 2016. REUTERS/Jean-Christophe Verhaegen/Pool 

A handicapped person is helped out of the Jose Marti Memorial after paying tribute to Cuba's late President Fidel Castro in Revolution Square in Havana, Cuba, November 29, 2016. REUTERS/Carlos Garcia Rawlins

A wheelchair is pictured in a corridor at the Pellegrin Hospital in Bordeaux, Southwestern France, November 23, 2016. REUTERS/Regis Duvignau 

German Finance Minister Wolfgang Schaeuble and Economy Minister Sigmar Gabriel attend a meeting at the lower house of parliament Bundestag on 2017 budget in Berlin, Germany, November 23, 2016. REUTERS/Fabrizio Bensch 

U.S. Senator-elect Tammy Duckworth (D-IL) arrives for Senate Democratic party leadership elections at the U.S. Capitol in Washington, DC, U.S. November 16, 2016. REUTERS/Jonathan Ernst 

(L-R) Honorary Award winners Jackie Chan, Frederick Wiseman, Anne V. Coates and Lynn Stalmaster pose on stage at the 8th Annual Governors Awards in Los Angeles, California, U.S., November 12, 2016. REUTERS/Mario Anzuoni 

(L-R) Honorary Award winners Jackie Chan, Frederick Wiseman, Anne V. Coates and Lynn Stalmaster pose on stage at the 8th Annual Governors Awards in Los Angeles, California, U.S., November 12, 2016. REUTERS/Mario Anzuoni 

Japan's Princess Yuriko, on a wheelchair, the wife of late Prince Mikasa, uncle of the current Emperor Akihito, is seen after praying at the altar during the funeral of late Prince Mikasa at the Toshimagaoka cemetery in Tokyo, Japan, November 4, 2016. REUTERS/Toru Hanai TPX IMAGES OF THE DAY

Kurdish Peshmerga fighters carry a wheelchair-bound man, Abbas Ali, 42, after he escaped with his wife and four children from the Islamic State-controlled village of Abu Jarboa, Iraq October 31, 2016. REUTERS/Azad Lashkari TPX IMAGES OF THE DAY

Kurdish Peshmerga fighters carry a wheelchair-bound man, Abbas Ali, 42, after he escaped with his wife and four children from the Islamic State-controlled village of Abu Jarboa, Iraq October 31, 2016. REUTERS/Azad Lashkari 

A newly internally displaced man is seen at Al Khazar camp near Hassan Sham, east of Mosul, Iraq October 26, 2016. REUTERS/Zohra Bensemra 

Saida Ahmad Baghili, 18, sits in a wheelchair at the al-Thawra hospital where she receives treatment for severe acute malnutrition in the Red Sea port city of Houdieda, Yemen October 25, 2016. REUTERS/Abduljabbar Zeyad SEARCH "SAIDA YEMEN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Two children play with a wheelchair in a street after Hurricane Matthew in Damassins, Haiti, October 22, 2016. REUTERS/Andres Martinez Casares 

A man pushes a handicapped man near a Red Crescent and United Nations aid convoy in the rebel held besieged town of Douma, eastern Ghouta in Damascus, Syria October 19, 2016. REUTERS/Bassam Khabieh 

Thailand's King Bhumibol Adulyadej (C), Queen Sirikit (2nd R) and Princess Maha Chakri Sirindhorn visit Thung Makham in Ayutthaya province, north of Bangkok May 25, 2012. REUTERS/Chaiwat Subprasom/File Photo 

Thailand's King Bhumibol Adulyadej (C), Queen Sirikit (2nd R) and Princess Maha Chakri Sirindhorn visit Thung Makham in Ayutthaya province, north of Bangkok May 25, 2012. REUTERS/Chaiwat Subprasom/File Photo 

U.S. Olympic and Paralympics teams athletes gather to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

U.S. Olympic and Paralympics teams athletes gather to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

Members of U.S. Paralympics team arrive to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

Members of U.S. Paralympics team arrive to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

Members of U.S. Paralympics team arrive to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

Members of U.S. Paralympics team arrive to be greeted by President Barack Obama at the White House in Washington, U.S., September 29, 2016. REUTERS/Yuri Gripas 

A man pushes a wheelchair at the accommodation where some patients and their family members stay while seeking medical treatment in Beijing, China, January 13, 2016. REUTERS/Kim Kyung-Hoon SEARCH "HOSPITAL ACCOMMODATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Wang uses a mobile phone as she take a rest in her room at the accommodation where patients and their family members stay while seeking medical treatments in Beijing, China, June 23, 2016. Wang, who suffers from cervical cancer, came from Inner Mongolia to seek treatment at a specialist hospital in Beijing. REUTERS/Kim Kyung-Hoon SEARCH "HOSPITAL ACCOMMODATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

In the shadow of one of China's top cancer hospitals in Beijing, a catacomb-like network of ramshackle brick buildings has become a home-from-home for hundreds of cancer patients and their families waiting for treatment. The cluster of nine buildings, connected by dark, narrow passageways, offers cheap accommodation for patients unable to afford a coveted hospital room, a reflection of the vast inequalities in China's overburdened healthcare system. These "cancer hotels" have sprung up near hospitals around the country to house some of the more than three million people diagnosed with cancer in China every year. REUTERS/Kim Kyung-Hoon SEARCH "HOSPITAL ACCOMMODATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY Matching text CHINA-CANCERHOTEL/ 

A carer feeds a resident on a wheelchair at the private nursing home "Silver Villa Koyama" in Tokyo, Japan, September 14, 2016. Picture taken on September 14, 2016. REUTERS/Kim Kyung-Hoon 

A resident on a wheelchair is pictured at the private nursing home "Silver Villa Koyama" in Tokyo, Japan, September 14, 2016. Picture taken on September 14, 2016. REUTERS/Kim Kyung-Hoon TPX IMAGES OF THE DAY 

A boy on a wheelchair sits with others in the rebel-held Douma neighbourhood of Damascus, Syria September 25, 2016. REUTERS/Bassam Khabieh 

2016 Rio Paralympics - Boccia - Mixed Pairs - BC3 - Semi Finals - Carioca Arena 2 - Rio de Janeiro, Brazil - 11/09/2016.
Singapore's Nurulasyiqah Mohammad Taha and Toh Sze Ning talk with their coaches
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2016 Rio Paralympics - Boccia - Mixed Pairs - BC3 - Semi Finals - Carioca Arena 2 - Rio de Janeiro, Brazil - 11/09/2016.
Singapore's Toh Sze Ning enters the court
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2016 Rio Paralympics - Opening ceremony - Maracana - Rio de Janeiro, Brazil - 07/09/2016.
A performer in a wheelchair takes part in the opening ceremony.
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REUTERS/Ueslei Marcelino
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Yip Pin Xiu poses for a picture during a tour of the Paralympic village
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Theresa Goh poses for a picture during a tour of the Paralympic village
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Theresa Goh poses for a picture during a tour of the Paralympic village
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Theresa Goh and Yip Pin Xiu (R) pose for a picture during a tour of the Paralympic village
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Theresa Goh and Yip Pin Xiu (R) pose for a picture during a tour of the Paralympic village
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Rio Paralympics - Paralympic Village - Rio de Janeiro, Brazil - 06/09/2016.
Singapore's Yip Pin Xiu poses for a picture during a tour of the Paralympic village
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Boys, one of them in a wheelchair, go down a street in the rebel-held al-Sheikh Said neighbourhood of Aleppo, Syria September 1, 2016. REUTERS/Abdalrhman Ismail

Athletics - IAAF Athletics Diamond League meeting Lausanne - Stade Olympique de la Pontaise, Lausanne, Switzerland - 25/8/2016 - Marcel Hug of Switzerland competes in the men's 1,500m wheelchair competition. REUTERS/Denis Balibouse 

French President Francois Hollande (2ndL) stands next to France's Olympic and World judo champion Teddy Riner (L) after he handed over the French flag to Michael Jeremiasz at the Elysee Palace in Paris, France, August 23, 2016. REUTERS/Gonzalo Fuentes 

French President Francois Hollande (2ndL) stands next to France's Olympic and World judo champion Teddy Riner (L) as he hands over the French flag to Michael Jeremiasz at the Elysee Palace in Paris, France, August 23, 2016. REUTERS/Gonzalo Fuentes 

French President Francois Hollande (2ndL) stands next to France's Olympic and World judo champion Teddy Riner (L) as he hands over the French flag to Michael Jeremiasz at the Elysee Palace in Paris, France, August 23, 2016. REUTERS/Gonzalo Fuentes 

Actress Roma Downey (R) greets actress Della Reese before unveiling her star on the Hollywood Walk of Fame in Los Angeles, California U.S., August 11, 2016. REUTERS/Mario Anzuoni