LAUSR

Department of Thoracic Surgery, Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China; School of Basic Medical Sciences, Hebei Medical University, Shijiazhuang 050017, China; Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China Contributions: (I) Conception and design: Z Li, M Sang; (II) Administrative support: P Guo, B Shan; (III) Provision of study materials or patients: P Guo, K Dong; (IV) Collection and assembly of data: F Liu, Y Wu; (V) Data analysis and interpretation: J Li, B Shan, M Sang; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. Correspondence to: Baoen Shan; Meixiang Sang. Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, China. Email: [email protected]; [email protected].