![Many referees, technical officials, award ceremony presenters and volunteers, who have physical disability, work for the athletes at the London Paralympics Games. Disabled helpers serve London Paralympics](../../../images/2012paraolympic/attachement/jpg/site1/20120905/0023ae69620911b15fc704.jpg) |
A technical official, right, assists pushing the wheelchair for a Portuguese athlete in the boccia ball competition during the London Paralympics Games on Sep 3, 2012. The 57-year-old has suffered from avascular necrosis and has to sit in a wheelchair. [Photo/Xinhua]
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Special coverage: London 2012 Paralympic Games