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. 24, 3 (Dec. 2016), 122-128. DOI:https://doi.org/10.47210/bjohns.2016.v24i3.89.