Sidauruk, Juliana, and Djamiandar Simamora. “Radiography of OS Calcaneus With Spur Study Formation at Columbia Asia Hospital Medan”. International Journal of Public Health Excellence (IJPHE) 3, no. 1 (December 31, 2023): 361–367. Accessed May 21, 2024. https://ejournal.ipinternasional.com/index.php/ijphe/article/view/678.