Khoubnasabjafari, M.; Ansarin, K.; Jouyban-Gharamaleki, V.; Panahi-Azar, V.; Shayanfar, A.; Mohammadzadeh, L.; Jouyban, A. Extraction and Analysis of Methadone in Exhaled Breath Condensate Using a Validated LC-UV Method. J Pharm Pharm Sci 2015, 18, 207-219.