作者: Denise J Jamieson , Margaret A Honein , Sonja A Rasmussen , Jennifer L Williams , David L Swerdlow
DOI: 10.1016/S0140-6736(09)61304-0
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摘要: … standardised case-report form for every confirmed and probable … began reporting aggregate data to the CDC, and we were … , employs some of the study authors, who had responsibility …