%0 Journal Article %T Relation Between Osteoporosis and Vitamin D Levels and Disease Activity in Psoriatic Arthritis %A Öten, E. %A Başkan, B. %A Sivas, F. %A Bodur, H. %J Journal of Clinical Practice and Research %D 2017 %V 39 %P 94-100 %R 10.5152/etd.2017.16120