title: Letter concerning "Segmental pelvic correlation (SPeC): a novel approach to understanding sagittal plane spinal alignment" by Anwar et al.
authors.affiliation: Department of Orthopedic Surgery, West China Hospital, Sichuan University, No. 37 GuoXue Rd, Chengdu, Sichuan 610041, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Orthopedic Surgery, West China Hospital, Sichuan University, No. 37 GuoXue Rd, Chengdu, Sichuan 610041, China.
authors.forename: Limin
authors.initials: L
authors.lastname: Liu
authors.affiliation: Department of Orthopedic Surgery, West China Hospital, Sichuan University, No. 37 GuoXue Rd, Chengdu, Sichuan 610041, China.
authors.forename: Yueming
authors.initials: Y
authors.lastname: Song
mesh_terms: D006801:Humans; D008141:Lordosis; D010388:Pelvis; D011859:Radiography; D013131:Spine