A case-control study was carried out for 88 cases ( 1 ∶ 1) and the blood and feces were cultured for typhoid bacillus.

  • [方法]对其中的88例进行1∶1病例对照研究;对血和粪进行培养。

  • 互联网摘选 2025-01-20 11:49:27

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