1. Opioid-induced emesis among hospitalized nonsurgical patients: Effect on pain and quality of life;Aparasu;J Pain Symptom Manage,1999
2. Graded pairs comparison - does strength of preference matter? Analysis of preferences for specialised nurse home visits for pain management;Bech;Health Econ,2007
3. Bell T, Annuziata K, Freedman D, Turk D, Leslie J, Muller-Schwefe G: Opioid-induced constipation increases healthcare resource use and impairs work productivity: Comparison with other patient groups with and without constipation. Abstract presented at: The 26th Annual Scientific Meeting of the American Pain Society, Washington, DC, May 5-7, 2007
4. Survey of chronic pain in Europe: Prevalence, impact on daily life, and treatment;Breivik;Eur J Pain,2006
5. Postoperative nausea and vomiting after discharge from outpatient surgery centers;Carroll;Anesth Analg,1995