Sidauruk J, Simamora D. Radiography of OS Calcaneus with Spur Study Formation at Columbia Asia Hospital Medan. Int Jou of PHE [Internet]. 2023 Dec. 31 [cited 2024 May 21];3(1):361-7. Available from: https://ejournal.ipinternasional.com/index.php/ijphe/article/view/678