INFLUENZA vaccine trial.
D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*
D007252:Influenza Vaccines
INFLUENZA/prevention and control
J Am Med Assoc. 1957 Nov 16;165(11):1366-73
13475045
J Am Med Assoc. 1957 Dec 28;165(17):2174-7
13480872