Wiboonphan, W., W. Aiumpatoomsak, P. Thienprasit, and T. Buranakarl. “Part I: Characteristics of Surgical Spine Patients at Bangkok Spine Academy (BSA)”. The Bangkok Medical Journal, vol. 3, no. 1, Feb. 2012, p. 22, doi:10.31524/bkkmedj.2012.02.005.