Vitamin D supplementation on prediabetic adults with vitamin D deficiency: a double-blind placebo-controlled randomized clinical trial oleh Md Habibul Ghani, Md. Shahed Morshed, Tahniyah Haq, Shahjada Selim, Murshed Ahamed Khan, Marufa Mustari, Mostafa Hasan Rajib, Anil Yadav, Ibrahim Faisal, Anil Kumar Shah, Md Firoj Hossain, M A Hasanat, Md Fariduddin