IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-13-4-55445 Original Research Paper A Study On Weak D Prevalence Among Blood Donors And Patients At Tertiary Care Referral Hospital In Bhavnagar, Gujarat Nisha Chauhan Dr. Dr. Nirmeet Bukeliya Dr. April 2024 13 4 01 02