Switching opioid-dependent patients in substitution treatment from racemic methadone, levomethadone and buprenorphine to slow-release oral morphine - Analysis of the switching process in routine care Baschirotto, Cinzia Lehmann, Kirsten Kuhn, Silke Reimer, Jens Verthein, Uwe 2020 - Forschungsinformationssystem des UKE