JOURNAL OF CLINICAL RESEARCH IN PEDIATRIC ENDOCRINOLOGY, vol.11, no.2, pp.181-188, 2019 (SCI-Expanded, Scopus, TRDizin)
Objective: This study aimed to determine the ratio of seasonal vitamin D deficiency and insufficiency in elementary school children aged between 6-9 years old, living in one of the largest metropols of Europe, Istanbul.