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The Journal of rheumatology  (2011)

Differential features between primary ankylosing spondylitis and spondylitis associated with psoriasis and inflammatory bowel disease.

Pérez Alamino, Rodolfo; Maldonado Cocco, José A; Citera, Gustavo; Arturi, Pablo; Vazquez-Mellado, Janitzia; Sampaio-Barros, Percival D; Flores, Diana; Burgos-Vargas, Rubén; Santos, Helena; Chavez-Corrales, José E; Palleiro, Daniel; Gutierrez, Miguel A; Vieira-Sousa, Elsa; Pimentel-Santos, Fernando M; Paira, Sergio; Berman, Alberto; Moreno-Alvarez, Mario; Collantes-Estevez, Eduardo