Study finds extremely low risk of HIV infection in football.
D000328:Adult; D003198:Computer Simulation; D004777:Environment; D005260:Female; D005538:Football / Q000293:injuries; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D008297:Male; D008954:Models, Biological; D012306:Risk; D012725:Sexual Behavior