title: Longitudinal and observational studies module.
authors.affiliation: Department of Rheumatology, St George Hospital, Kogarah, NSW, Australia.
authors.forename: M N
authors.initials: MN
authors.lastname: Lassere
mesh_terms: D001172:Arthritis, Rheumatoid / Q000209:etiology / Q000628:therapy; D015331:Cohort Studies; D049673:History, 20th Century; D006801:Humans; D008137:Longitudinal Studies; D011446:Prospective Studies; D012106:Research / Q000266:history; D012107:Research Design