The Paralympic Games or Paralympics are a periodic series of international multi-sport events involving athletes with a range of disabilities, including impaired muscle power (e.g. paraplegia and quadriplegia, muscular dystrophy, post-polio syndrome, spina bifida), impaired passive range of movement, limb deficiency (e.g. amputation or dysmelia), leg length difference, short stature, hypertonia, ataxia, athetosis, vision impairment and intellectual impairment. There are Winter and Summer Paralympic Games, which since the 1988 Summer Olympics in Seoul, South Korea, are held almost immediately following the respective Olympic Games. All Paralympic Games are governed by the International Paralympic Committee (IPC).The Paralympics has grown from a small gathering of British World War II veterans in 1948 to become one of the largest international sporting events by the early 21st century. The Paralympics has grown from 400 athletes with a disability from 23 countries in 1960 to thousands of competitors from over 100 countries at the 2012 Summer Olympics. Paralympians strive for equal treatment with non-disabled Olympic athletes, but there is a large funding gap between Olympic and Paralympic athletes.