title: Happy families.
authors.affiliation: ARC Epidemiology Research Unit, Manchester University Medical School.
authors.forename: B
authors.initials: B
authors.lastname: Ollier
authors.forename: J
authors.initials: J
authors.lastname: Worthington
mesh_terms: D004992:Ethics, Medical; D008040:Genetic Linkage; D005826:Genetics, Medical / Q000379:methods / Q000639:trends; D006801:Humans; D010375:Pedigree; D012216:Rheumatic Diseases / Q000235:genetics*