title: Mr. Fan and Mr. Xin, et al reply.
authors.forename: Dazhi
authors.initials: D
authors.lastname: Fan
authors.forename: Lihong
authors.initials: L
authors.lastname: Xin
authors.forename: L I
authors.initials: LI
authors.lastname: Liu
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University;
authors.forename: Guoqi
authors.initials: G
authors.lastname: Cai
authors.affiliation: Department of Rheumatism and Immunity, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui;
authors.forename: Shengqian
authors.initials: S
authors.lastname: Xu
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui 230032, China. famingpan@ahmu.edu.cn.
authors.forename: Faming
authors.initials: F
authors.lastname: Pan
mesh_terms: D006801:Humans; D007989:Libido / Q000502:physiology*; D008297:Male; D012735:Sexual Dysfunction, Physiological / Q000150:complications*; D013167:Spondylitis, Ankylosing / Q000150:complications*