Cancer and contagious disease in twins. Interrelation of host defense mechanisms.
D001722:Birth Order; D001724:Birth Weight; D003141:Communicable Diseases / Q000453:epidemiology*; D004200:Diseases in Twins / Q000453:epidemiology*; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology*; D012723:Sex