Felix K Jebasingh1, Pooja Ramakant2, Nylla Shanthly3, Thomas Vizhalil Paul1. 1. Department of Endocrinology, Diabetes and Metabolism, Christian Medical College, Vellore, Tamil Nadu, India. 2. Department of Endocrine Surgery, SGPGIMS, Lucknow, Uttar Pradesh, India. 3. Department of Nuclear Medicine, Christian Medical College, Vellore, India.