Vitamin D receptor gene polymorphism in Polish patients with morbid obesity**

1Department of Biochemistry and Clinical Chemistry, Medical University of Warsaw Head of Department: prof. Jacek Łukaszkiewicz, MD, PhD 2Department of Clinical Immunology, Transplantation Institute, Medical University of Warsaw Head of Department: prof. Andrzej Górski, MD, PhD 3Department of Family Medicine, Internal Medicine and Metabolic Bone Diseases, Medical Centre of Postgraduate Education, Prof. W. Orlowski Hospital in Warsaw Head of Department: Marek Tałałaj, MD, PhD, associate professor 4Department of Pharmacogenomics, Medical University of Warsaw Head of Department: prof. Grażyna Nowicka, MD, PhD