HRT in a general practice population: further observations on the 'healthy cohort' effect.
Lee
K W
KW
Freestone
B
B
Harris
L
L
Lip
G Y H
GY
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