title: Prognostic factors of low bone mineral density in ankylosing spondylitis.
authors.forename: Percival D
authors.initials: PD
authors.lastname: Sampaio-Barros
authors.forename: Silvana
authors.initials: S
authors.lastname: Filardi
authors.forename: Adil Muhib
authors.initials: AM
authors.lastname: Samara
authors.forename: João Francisco
authors.initials: JF
authors.lastname: Marques-Neto
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D000483:Alleles; D044383:Black People / Q000208:ethnology; D015519:Bone Density; D001938:Brazil / Q000208:ethnology; D003430:Cross-Sectional Studies; D005500:Follow-Up Studies; D015796:HLA-B27 Antigen / Q000235:genetics; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012307:Risk Factors; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging* / Q000208:ethnology / Q000235:genetics; D044465:White People / Q000208:ethnology
chemical_list: D015796:HLA-B27 Antigen