title: Biological fallacy.
authors.forename: Guohua
authors.initials: G
authors.lastname: Li
mesh_terms: D015982:Bias; D015984:Causality; D003625:Data Collection / Q000379:methods*; D003627:Data Interpretation, Statistical; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data; D006801:Humans; D012107:Research Design; D012111:Residence Characteristics