title: Are spondylarthritides related but distinct conditions or a single disease with a heterogeneous phenotype?
authors.affiliation: Academic Medical Center and University of Amsterdam, Amsterdam, The Netherlands. d.l.baeten@amc.uva.nl
authors.forename: Dominique
authors.initials: D
authors.lastname: Baeten
authors.forename: Maxime
authors.initials: M
authors.lastname: Breban
authors.forename: Rik
authors.initials: R
authors.lastname: Lories
authors.forename: Georg
authors.initials: G
authors.lastname: Schett
authors.forename: Joachim
authors.initials: J
authors.lastname: Sieper
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D018740:Genetic Heterogeneity; D006801:Humans; D010641:Phenotype; D012307:Risk Factors; D013131:Spine / Q000473:pathology*; D025241:Spondylarthritis / Q000145:classification* / Q000235:genetics / Q000276:immunology