Bhedi, Amul, Mithun Panchal, Hitesh Patel, and Arnab Sarkar. “A Comparative Study of Collagenase Ointment Versus Povidone-Iodine Dressing in Non-Healing Ulcers”. International Surgery Journal 4, no. 6 (May 24, 2017): 1992–1996. Accessed October 25, 2025. https://www.ijsurgery.com/index.php/isj/article/view/1279.