Uthaicharatratsame, MD, Charoenwat, Suppawut Pruetiworanan, MD, and Pracha Suebpongsiri, MD. 2022. “The Use of Combining a Smartphone and a Digital Angle Ruler Technique to Assist Acetabular Cup Placement: A Clinical Study”. Journal of Southeast Asian Orthopaedics 44 (1-2). Bangkok, Thailand:34-41. https://jseaortho.org/index.php/jsao/article/view/42.