共 5 条
- [2] 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] NICHOLSON K, 1988, INFLUENZA STRATEGIES, P34
- [4] 1985, NEW VACCINE DEV ESTA, V1
- [5] 1988, IMMUNISATION INFECTI