title: Differential effects of morphine and codeine on pupil size: dosing issues.
authors.affiliation: Pain Management Centre, Queen's Medical Centre, University Hospital, Nottingham, United Kingdom, greg.hobbs@mail.qmcuh-tr.trent.nhs.uk.
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Hobbs
authors.forename: Roger D
authors.initials: RD
authors.lastname: Knaggs
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage / Q000494:pharmacology*; D003061:Codeine / Q000008:administration & dosage / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D009020:Morphine / Q000008:administration & dosage / Q000494:pharmacology*; D011680:Pupil / Q000187:drug effects*
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine; D003061:Codeine