1. Nieman D. Exercise, upper respiratory tract infection, and the immune system. Med Sci Sports Exerc. 1994;26(2):128–39.
2. Nieman D, Johanssen L, Lee J, Arabatzis K. Infectious episodes in runners before and after the Los Angeles Marathon. J Sports Med Phys Fitness. 1990;30(3):316–28.
3. Peters E, Bateman E. Ultramarathon running and upper respiratory tract infections. An epidemiological survey. S Afr Med J. 1983;64(15):582–4.
4. Nieman D, Johanssen L, Lee J. Infectious episodes in runners before and after a roadrace. J Sports Med Phys Fitness. 1989;29(3):289–96.
5. Robson-Ansley P, Howatson G, Tallent J, Mitcheson K, Walshe I, Toms C, et al. Prevalence of allergy and upper respiratory tract symptoms in runners of London Marathon. Med Sci Sports Exerc. 2012;44(6):999–1004.