IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-8-51674 Original Research Paper Applications Of Platelet Rich Plasma In Chronic Ulcers Of Head And Neck- A Prospective Study Sutirtha Saha Dr. Dr Trailokeswar Prusti Dr. Dr Pranabashish Banerjee Dr. August 2023 12 8 01 02