Waldvogel D, Bernd Figner, Eich D. Illicit methadone injecting during methadone maintenance treatment in a specialised out-patient clinic. Swiss Med Wkly [Internet]. 2005 Nov. 5 [cited 2024 Nov. 8];135(4344):644-6. Available from: https://smw.ch/index.php/smw/article/view/546