共 30 条
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[22]
1988, REPORT COMMITTEE INF
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1985, GUIDE ADULT IMMUNIZA
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1988, GLOBAL ERADICATION P
[25]
1989, CDC3 CTR DIS CONTR R
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1985, TARGETS HLTH ALL TAR
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1989, CANADIAN IMMUNIZATIO
[28]
1989, MMWR, V38, P1
[29]
1984, 1984 WHO M KARL VAR
[30]
1981, CANADA DIS WEEKLY RE, V7, P81