共 38 条
[2]
AUSTRIAN R, 1977, New England Journal of Medicine, V297, P938, DOI 10.1056/NEJM197710272971712
[5]
INFLUENZA VACCINATION OF ELDERLY PERSONS - REDUCTION IN PNEUMONIA AND INFLUENZA HOSPITALIZATIONS AND DEATHS
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1980, 244 (22)
:2547-2549