共 37 条
- [1] 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
- [3] BLACK ER, 1978, ACUTE CONDITIONS INC
- [5] BROCKLEBANK JT, 1972, LANCET, V2, P497
- [6] CHANOCK RM, 1965, PEDIATRICS, V36, P21
- [7] CHOI JW, 1978, ACUTE CONDITIONS INC
- [9] FEKETY RF, 1971, AM REV RESPIR DIS, V104, P499