title: [Rheumatoid arthritis. Epidemiology. Etiologic factors].
authors.affiliation: Servicio de Reumatología, Hospital Universitario Clínica Puerta de Hierro, Madrid.
authors.forename: J
authors.initials: J
authors.lastname: Mulero Mendoza
authors.forename: M A
authors.initials: MA
authors.lastname: Contreras
authors.forename: C
authors.initials: C
authors.lastname: Barbadillo
authors.forename: J L
authors.initials: JL
authors.lastname: Andreu
mesh_terms: D001172:Arthritis, Rheumatoid / Q000453:epidemiology* / Q000209:etiology*; D002980:Climate; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D015995:Prevalence; D012737:Sex Factors; D012907:Smoking / Q000009:adverse effects