Case-control study 3: Contacts between colleagues and airing of communal areas and risk of COVID-19 (all professions included).
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Case-control study 3: Contacts between colleagues and airing of communal areas and risk of COVID-19 (all professions included).
病例对照研究3：同事间接触、公共区域通风情况与新冠病毒（COVID-19）感染风险的关联研究（涵盖所有职业）
创建时间：
2022-03-21
