Zulham Effendy, Tri Yanti Rahayuningsih, Fachrul Razi, Hendra Kurniawan, Azmi, Farhan Marzuki, Herdianta, and Rovy Pratama. “Calciferol Status and Clinical Outcomes in Children With Congenital Heart Disease After Heart Surgery”. Folia Medica Indonesiana 59, no. 2 (June 10, 2023): 197–204. Accessed August 3, 2024. https://e-journal.unair.ac.id/FMI/article/view/44534.