title: Authors' reply to Patel and colleagues.
authors.affiliation: Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Sun
authors.affiliation: Department of Clinical Epidemiology and Biostatistics and Department of Medicine, McMaster University, Hamilton, ON, Canada.
authors.forename: Gordon H
authors.initials: GH
authors.lastname: Guyatt
authors.affiliation: Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Li