title: Clinical research designs: quantitative studies.
authors.affiliation: Department of Medicine, McMaster University, Hamilton, Ontario, Canada. heddlen@mcmaster.ca
authors.forename: Nancy M
authors.initials: NM
authors.lastname: Heddle
mesh_terms: D002985:Clinical Protocols / Q000145:classification*; D006801:Humans; D010342:Patient Acceptance of Health Care; D012107:Research Design