title: [Onset of rheumatoid arthritis in a patient with ankylosing spondylitis].
authors.forename: E
authors.initials: E
authors.lastname: Reis
authors.forename: J
authors.initials: J
authors.lastname: Carvalho
mesh_terms: D001172:Arthritis, Rheumatoid / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000150:complications*