title: Increased risk of ankylosing spondylitis among first-born children: comment on the article by Baudoin et al.
authors.forename: R
authors.initials: R
authors.lastname: Said-Nahal
authors.forename: C
authors.initials: C
authors.lastname: Miceli-Richard
authors.forename: M
authors.initials: M
authors.lastname: Dougados
authors.forename: M
authors.initials: M
authors.lastname: Breban
mesh_terms: D000328:Adult; D001722:Birth Order; D002648:Child; D005192:Family Health; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors; D013167:Spondylitis, Ankylosing / Q000209:etiology*