Metta V, Nichkaode PB, Panchbhai SV, Charan S, Purohit A. Clinical study of sterile collagen (Biofil) particles in the management of chronic non healing ulcers and their comparison with saline dressings. Int Surg J [Internet]. 2020 Mar. 26 [cited 2026 Feb. 20];7(4):1148-52. Available from: https://www.ijsurgery.com/index.php/isj/article/view/5489