title: HRT in a general practice population: further observations on the 'healthy cohort' effect.
authors.forename: K W
authors.initials: KW
authors.lastname: Lee
authors.forename: B
authors.initials: B
authors.lastname: Freestone
authors.forename: L
authors.initials: L
authors.lastname: Harris
authors.forename: G Y H
authors.initials: GY
authors.lastname: Lip
mesh_terms: D015331:Cohort Studies; D003327:Coronary Disease / Q000517:prevention & control*; D015914:Estrogen Replacement Therapy; D005260:Female; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic; D015983:Selection Bias