[Effectiveness of the influenza vaccination].
D005860:Germany, West; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*
D007252:Influenza Vaccines
Beitrag zur Wirksamkeit der Grippeschutzimpfung