共 28 条
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- [22] 1980, NATIONAL INFANT MORT
- [23] 1983, EPIDEMIOL B, V4, P1
- [24] 1986, MONTHLY VITAL STAT S, V35
- [25] 1984, WEEKLY EPIDEMIOL REC, V59, P361
- [26] 1984, MONTHLY VITAL STAT S, V33, P4
- [27] 1987, VITAL STATISTICS U A, V2
- [28] 1980, INT CLASSIFICATION S, V28