title: Is retrospective study reliable in genetic studies?
authors.forename: C H
authors.initials: CH
authors.lastname: Leung
authors.forename: W S
authors.initials: WS
authors.lastname: Poon
authors.forename: L M
authors.initials: LM
authors.lastname: Yu
mesh_terms: D053327:Apolipoprotein E4; D001057:Apolipoproteins E / Q000235:genetics; D015982:Bias; D003627:Data Interpretation, Statistical; D005823:Genetics / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards; D012189:Retrospective Studies; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis / Q000235:genetics / Q000628:therapy; D014057:Tomography, X-Ray Computed / Q000145:classification / Q000706:statistics & numerical data; D016896:Treatment Outcome
chemical_list: D053327:Apolipoprotein E4; D001057:Apolipoproteins E