Effect of magnesium supplementation on glucose metabolism in people with or at risk of diabetes: A systematic review and meta-analysis of double-blind randomized controlled trials - Veronese, N; Watutantrige-Fernando, S; Luchini, C; Solmi, M; Sartore, G; Sergi, G; Manzato, E; Barbagallo, M; Maggi, S; Stubbs, B (Eur J Clin Nutr, 2016)