NickelRRaspeHH. Chronic pain: Epidemiology and health care utilization. Nervenarzt. 2001;72:897–906.
2.
OspinaMHarstallC.Prevalence of chronic pain: An overview. Alberta Heritage Foundation for Medical Research, Health Technology Assessment. Report no 28. Edmonton (AB): [publisher unknown]; 2002.
3.
KaraszAZallmanLBergK, The experience of chronic severe pain in patients undergoing methadone maintenance treatment. J Pain Symptom Manage. 2004;28:517–525.
4.
Substance Abuse and Mental Health Services Administration. Results from the 2006 National Survey on Drug Use and Health: National Findings (Office of Applied Studies, NSDUH Series H-32, DHHS Publication No SMA 07–4293). Rockville (MD): [publisher unknown]; 2007.
5.
AdlafEMBeginPSwakaE, editors. Canadian Addiction Survey (CAS): A national survey of Canadians use of alcohol and other drugs: Prevalence of use and related harms: Detailed report. Ottawa (ON): Canadian Centre on Substance Abuse; 2005.
6.
KroenkeK.Patients presenting with somatic complaints: Epidemiology, psychiatric comorbidity and management. Int J Methods Psychiatr Res. 2003;12:34–43.
7.
BroonerRKKingVLKidorfMS, Psychiatric and substance use comorbidity in treatment-seeking opioid abusers. Arch Gen Psychiatry. 1997;54:71–80.
8.
ClarkMRChodynickiMP. Pain management. Textbook of psychosomatic medicine. In: LevensonJL, editor. Arlington (VA): American Psychiatric Publishing, Inc; 2005. p 827–867.
9.
KidorfMSNeufeldKBroonerRK. Combining stepped-care approaches with behavioral reinforcement to motivate employment in opioid-dependent outpatients. Subst Use Misuse. 2004;39:2215–2238.
10.
TeasellRWBombardierC.Employment-related factors in chronic pain and chronic pain disability. Clin J Pain. 2001;17(Suppl 4):S39–S45.
11.
KidorfMSKingVL. Expanding the public health benefits of syringe exchange programs. Can J Psychiatry. 2008;53(8):487–495.
12.
ClarkMRStollerKBBroonerRK. Assessment and management of chronic pain in people seeking treatment for opioid dependence disorder. Can J Psychiatry. 2008;53(8):496–508.