title: Tears at bedtime.
authors.forename: K A
authors.initials: KA
authors.lastname: Payne
authors.forename: J A
authors.initials: JA
authors.lastname: Roelofse
authors.forename: E A
authors.initials: EA
authors.lastname: Shipton
mesh_terms: D000556:Ambulatory Surgical Procedures; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D002648:Child; D002675:Child, Preschool; D004334:Drug Administration Schedule; D006801:Humans; D010149:Postoperative Pain / Q000517:prevention & control*; D014147:Tramadol / Q000008:administration & dosage*
chemical_list: D000701:Analgesics, Opioid; D014147:Tramadol