1[1]Feldtkeller E.Erkrankungsalter,diagnoseverzogerung spon dylarthropathien.[Age at disease onset and delayed diagnosis of spondyloarthropathies][J].ZRheumatol,1999,58(1):21-30.
2[2]Dubost JJ,Ristori JM,Zmantar C,et al.Rhumatismes seronegatifs a debut tardif.Frequence et atypies des spondylarthropathies.[Seronegative r heumatism of late onset.Incidense and atypical forms of spodylarthropathy][J].Rev Rhum Mal Osteoartic,1991,58(9):577-584.
