JEGODA, R. K. A comparative study of collagen granules vs conventional dressing in the management of chronic ulcer. International Surgery Journal, [S. l.], v. 7, n. 3, p. 867–869, 2020. DOI: 10.18203/2349-2902.isj20200835. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/5173. Acesso em: 26 may. 2026.