title: Variations in the use of health care services: why are more studies needed?
authors.forename: R
authors.initials: R
authors.lastname: Blais
mesh_terms: D002170:Canada; D003625:Data Collection / Q000379:methods; D005260:Female; D006296:Health Services / Q000706:statistics & numerical data*; D006801:Humans; D007044:Hysterectomy / Q000706:statistics & numerical data