Putranto, R., Setiati, S., Nasrun, M.W., Witjaksono, F., Immanuel, S., Subekti, I., Harimurti, K., Siswanto, A., Shatri, H., Suwarto, S. and Megantara, M.A. 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 (Oct. 2024), e1342. DOI:https://doi.org/10.52225/narra.v4i3.1342.