title: Comment on Krul-Poel et al. Effect of vitamin D supplementation on glycemic control in patients with type 2 diabetes (SUNNY Trial): a randomized placebo-controlled trial. Diabetes Care 2015;38:1420-1426.
authors.affiliation: Department of Medical, Surgical, Neurological, Metabolic and Geriatric Sciences, Endocrinology and Metabolic Diseases Unit, Second University of Naples, Naples, Italy giuseppe.bellastella@unina2.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bellastella
authors.affiliation: Department of Medical, Surgical, Neurological, Metabolic and Geriatric Sciences, Endocrinology and Metabolic Diseases Unit, Second University of Naples, Naples, Italy.
authors.forename: Maria Ida
authors.initials: MI
authors.lastname: Maiorino
authors.affiliation: Department of Clinical and Experimental Medicine, Diabetes Unit, Second University of Naples, Naples, Italy.
authors.forename: Katherine
authors.initials: K
authors.lastname: Esposito
authors.affiliation: Department of Medical, Surgical, Neurological, Metabolic and Geriatric Sciences, Endocrinology and Metabolic Diseases Unit, Second University of Naples, Naples, Italy.
authors.forename: Dario
authors.initials: D
authors.lastname: Giugliano
mesh_terms: D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy*; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D014807:Vitamin D / Q000008:administration & dosage*
chemical_list: D014807:Vitamin D