Segana, H. A. C., Nair, R. and Shah, F. A. (2016) “Vitamin D Deficiency in South Sharqiya in Oman and its Impact in ENT Patients- A Retrospective Study”, Bengal Journal of Otolaryngology and Head Neck Surgery. Kolkata, India, 24(3), pp. 122-128. doi: 10.47210/bjohns.2016.v24i3.89.