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Publisher
- centers for disease control & prevention (cdc)36
- u.s. centers for disease control13
- u.s. government printing office12
- centers for disease control mmwr office9
- national center for infectious diseases, centers for disease control and prevention (cdc)9
- u.s. national center for infectious diseases9
- oxford university press / usa8
- american society for microbiology7
- centers for disease control and prevention (cdc)7