title: Response to the comment letter about adjustment.
authors.affiliation: Department of Cardiovascular and Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Xianmian
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: Department of Cardiovascular and Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors.forename: Wujun
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Cardiovascular and Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. Electronic address: david_lu1989@163.com.
authors.forename: Di
authors.initials: D
authors.lastname: Lu
mesh_terms: D047549:Coronary Artery Bypass, Off-Pump / Q000379:methods*; D003324:Coronary Artery Disease / Q000601:surgery*; D054855:Drug-Eluting Stents; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*
keywords: Drug-eluting stent; Meta-analysis; Mortality; Observational study; Off-pump coronary artery bypass grafting