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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f20_36_21067

©2013 UpToDate ® Print Email Frequency of coexisting autoimmune diseases in 645 patients with relapsing polychondritis Number Systemic vasculitis 73* Rheumatoid disease 31 Lupus erythematous 18 Sjögren's syndrome 15 Behcet's disease 8 Ankylosing spondylitis 7 Reactive arthritis 6 Psoriatic arthritis 4 Systemic sclerosis 2 Polymyalgia rheumatica 2 Retroperitoneal fibrosis 1 * Encompasses both primary and secondary forms of vasculitis.