Kumar, S., Nayak, D., Kumar, S., Khan, M., Rastogi, R. and Samant, V. 2021. Collagen membrane: A new concept in surgical management for mucosal defect in oral sub mucous fibrosis. Asian Journal of Medical Sciences. 12, 8 (Jul. 2021), 71–75. DOI:https://doi.org/10.3126/ajms.v12i8.37077.