| Author Name | Affiliation | | LIU Fang | Department of Second Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China | | LI Lan-fang | Chinese Center for Disease Control and Prevention in Hebei Province, Shijiazhuang 050021, China | | LIU Guang-jie | Department of Second Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China | | JIANG Hong | Chinese Center for Disease Control and Prevention in Hebei Province, Shijiazhuang 050021, China | | ZHANG Qin-zeng | Chinese Center for Disease Control and Prevention in Hebei Province, Shijiazhuang 050021, China |
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