title: Masked mischief.
authors.affiliation: Department of Anaesthesia, McGill University, Montreal, Canada.
authors.forename: P R
authors.initials: PR
authors.lastname: Bromage
mesh_terms: D000698:Analgesia / Q000009:adverse effects*; D000768:Anesthesia, General / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000188:drug therapy* / Q000473:pathology*; D011183:Postoperative Complications / Q000175:diagnosis / Q000473:pathology*; D013119:Spinal Cord Injuries / Q000175:diagnosis