Bakan, Ayse Berivan, Naim Uzun, Senay Karadag Arli, and Metin Yıldız. “THE RELATIONSHIP BETWEEN THE COTININE LEVEL IN URINE AND VITAMIN D IN THE UNIVERSITY STUDENTS”. Belitung Nursing Journal 6, no. 6 (December 21, 2020): 214–219. Accessed March 28, 2024. https://www.belitungraya.org/BRP/index.php/bnj/article/view/1180.