title: The Hawthorne effect: can it be measured and utilized?
authors.forename: C
authors.initials: C
authors.lastname: Lehmann
authors.forename: A
authors.initials: A
authors.lastname: Nowak
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010149:Postoperative Pain / Q000188:drug therapy*; D058996:Quality Improvement / Q000458:organization & administration*