title: Don't rush to judge: drawing conclusions about treatment based on observational studies.
authors.forename: Marc H
authors.initials: MH
authors.lastname: Gorelick
mesh_terms: D000293:Adolescent; D000778:Anesthetics, Dissociative / Q000008:administration & dosage / Q000009:adverse effects*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007649:Ketamine / Q000008:administration & dosage / Q000009:adverse effects*; D015201:Meta-Analysis as Topic; D019370:Observation; D017891:Pharmacoepidemiology; D012107:Research Design; D012137:Respiratory System / Q000187:drug effects*
chemical_list: D000778:Anesthetics, Dissociative; D007649:Ketamine