sentences:  In 1986 Gall established the Sandy Gall's Afghanistan Appeal (SGAA).As of 2006 the charity, which is supported by the Princess of Wales Memorial Fund and United States Agency for International Development (USAID), has provided artificial limbs and walking aids for more than 20,000 people, and physiotherapy for more than 50,000 people.Gall retired from ITN in 1991, but has continued television work and writing.