Sanjay Kalra, Madhur Verma, and Nitin Kapoor. “The Quintessential Quincunx: A Model for Health Care Delivery”. Journal of the Pakistan Medical Association 72, no. 3 (March 3, 2022). Accessed May 12, 2026. https://jpma.org.pk/index.php/public_html/article/view/6517.