Samar, R., S. A. Ali, V. Samar, S. . Samar, S. A. Khan, and S. Mansoor. “Factors Affecting the Choice of Sub-Specialty Among Medical Residents: A Cross-Sectional Study”. Pakistan Journal of Medical Research, vol. 61, no. 2, Aug. 2022, pp. 63-67, https://www.pjmr.org.pk/index.php/pjmr/article/view/345.