One Anastomosis Gastric Bypass Surgery: Consequences Over Ascorbic Acid, Cobalamin, Calciferol, and Calcium: Bariatric Surgery Series: Paper I. - Singh, Arya; Ahmad, Rahnuma; Sinha, Susmita; Haq, Md. Ahsanul; Narwariaq, Mahendra; Haque, Mainul; Kumar, Santosh; Sanghani, Nandita (Bangladesh Journal of Medical Science, 2023)