The Muscular Dystrophy Association (MDA) is an American organization which combats muscular dystrophy and diseases of the nervous system and muscular system in general by funding research, providing medical and community services, and educating health professionals and the general public. The organization was founded in 1950 by a group of concerned parents of children with muscular dystrophy. Originally known as the Muscular Dystrophy Associations of America, it was renamed to its present name in the 1970s. Comedian and actor Jerry Lewis was the most popular and well known celebrity associated with MDA, whose work with the organization was known through his annual telethon that he hosted annually through 2010. Other celebrities and entertainers have supported the organization over the years, including Dean Martin, Frank Sinatra, Sammy Davis, Jr., Wayne Newton, Michael Jackson, Ed McMahon, Norm Crosby, Don Francisco, Aretha Franklin, Maureen McGovern and Diana Ross. MDAs national office is in Chicago, Illinois.