The association between serum vitamin D status and dental caries or molar incisor hypomineralisation in 7–9-year-old Norwegian children: a cross-sectional study

Torunn Børsting, Tone Natland Fagerhaug, Annemarie Schuller, Paula van Dommelen, Signe Nilssen Stafne, Siv Mørkved, Astrid Kamilla Stunes, Miriam K. Gustafsson, Unni Syversen, Yi-Qian Sun & Marit S. Skeie