@article{Gogas_Yavuz2020_379285, author={Dilek Gogas Yavuz and eren imre and Hatice Gizem Gunhan and Meliha melin uygur and Onur Elbasan}, title={Serum 25(OH) Vitamin D Levels in Severely Obese Patients Evaluated Before Bariatric Surgery}, year={2020}, journal={Turkish Journal of Endocrinology and Metabolism}, issn={1301-2193}, volume={24}, number={2}, url={http://search/yayin/detay/379285} }