Levine, M Comparison of one- and two-dose regimens of influenza vaccine for elderly men. [electronic resource] - CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne Oct 1987 - 722-6 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0820-3946 Subjects--Topical Terms: AdultAgedAged, 80 and overAntibodies, Viral--analysisHemagglutination Inhibition TestsHemagglutinins, Viral--immunologyHumansImmunization ScheduleInfluenza A virus--immunologyInfluenza B virus--immunologyInfluenza Vaccines--administration & dosageMaleMiddle Aged