aDepartment of Epidemiology and Statistic, Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, Hebei
bDepartment of Ultrasound, Hebei Chest Hospital
cDepartment of Infectious Diseases, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Hebei, Shijiazhuang, China
*Xiu-li Chen is a co-corresponding author.
Received 7 July 2022 Accepted 18 August 2022
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Correspondence to Man Li, MD, PhD, Department of Epidemiology and Statistic, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang 050017, Hebei, China, Tel: +8618931129098; fax numbers: +86311 86265601; e-mail: [email protected]