VARIED , UNPRECEDENTED DERMATOLOGIC MANIFESTATIONS OF HYPOVITAMINOSIS D ---A CASE SERIES , Dr . Amit Sarkar, Dr. Rajat Bandyopadhyay, Dr . Satyendra Nath Saha, Dr. Bikash Chandra Swaika, INTERNATIONAL JOURNAL OF PURE MEDICAL RESEARCH : Volume-6 | Issue-4 | April-2021