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Seasonal disease activity and serum vitamin D levels in rheumatoid arthritis,ankylosing spondylitis and osteoarthritis |
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| Authors: | L Yazmalar L Ediz M Alpayci O Hiz M Toprak I Tekeoglu |
| Affiliation: | 1 Yuzuncu Yil University Medical Faculty, Physical Medicine and Rehabilitation Department. Van. Turkey;2 Sakarya University Medical Faculty, Rheumatology Department. Sakarya. Turkey |
| Abstract: | |
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