1. Anatomy of the knee;Warren,1986
2. Athletic injuries: Comparison by age, sport, and gender;Dehaven;Am J Sports Med,1986
3. 636,000 injuries annually in high school football;Powell;Athletic Training,1987
4. Skiing injuries;Ellison,1977
5. Football injury and survey: Part I;Blyth;Phys Sportsmed,1974