Effect of vitamin D3 supplementation on glycated hemoglobin (HbA1c), fructosamine, serum lipids, and body mass index: a randomized, double-blinded, placebo-controlled trial among healthy immigrants living in Norway
A. Madar, K. V. Knutsen, L. C. Stene, M. Brekke, H. Meyer, P. Lagerløv
BMJ Open Diabetes Research & Care