Exercise, vitamins and respiratory tract infections.
Hemilä
Harri
H
D003139:Common Cold / Q000453:epidemiology / Q000517:prevention & control*; D015986:Confounding Factors, Epidemiologic; D015444:Exercise; D006801:Humans; D015994:Incidence; D014815:Vitamins / Q000627:therapeutic use*; D014861:Washington / Q000453:epidemiology
D014815:Vitamins