1 Clinical Effectiveness of School Screening for Adolescent Idiopathic Scoliosis: A Large Population-Based Retrospective Cohort Study Keith D. K. Luk*, C. F. Lee*, Kenneth M. C. Cheung*, Jack C. Y. Cheng, Bobby K. W. Ng, T. P. Lam, K. H. Mak, Paul S. F. Yip, Daniel Y. T. Fong* * These authors contributed equally to this paper. Author affiliations Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong SAR, China Prof. Keith Dip Kei Luk, M.Ch. Orth. (e-mail: hrmoldk@hku.hk) Prof. Kenneth Man Chee Cheung, M.D. (e-mail: cheungmc@hku.hk) Department of Nursing Studies, The University of Hong Kong, Pokfulam, Hong Kong SAR China Mr. Chun Fan Lee, M.Phil. (e-mail: fanlee@hku.hk) Dr. Daniel Yee Tak Fong, Ph.D. (e-mail: dytfong@hku.hk) Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China Prof. Jack Chun Yiu Cheng, M.D. (e-mail: jackcheng@uab.cuhk.edu.hk) Dr. Tsz Ping Lam, M.D. (e-mail: tplam@ort.cuhk.edu.hk)