| Hans-Günter Meyer-Thompson | International
Opioid and Polydrug Use Among Patients in Opioid Maintenance Treatment.
Opioid and Polydrug Use Among Patients in Opioid Maintenance Treatment.
Carlsen SL, Lunde LH, Torsheim T.
Subst Abuse Rehabil. 2020 Jan 29;11:9-18. doi: 10.2147/SAR.S221618.