Putranto, R. (2024) “Effects of cholecalciferol supplementation on depressive symptoms, C-peptide, serotonin, and neurotrophin-3 in type 2 diabetes mellitus: A double-blind, randomized, placebo-controlled trial”, Narra J, 4(3), p. e1342. doi: 10.52225/narra.v4i3.1342.