title: Experimental design should be regulated for the study.
authors.forename: Hong-Lin
authors.initials: HL
authors.lastname: Chen
authors.forename: Qin-Sheng
authors.initials: QS
authors.lastname: You
authors.forename: Xiao-Dan
authors.initials: XD
authors.lastname: Wen
mesh_terms: D015505:Chest Tubes; D006801:Humans; D008171:Lung Diseases / Q000601:surgery*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design