@article{2972847, title = "Validated method for the simultaneous determination of methadone and its main metabolites (EDDP and EMDP) in plasma of umbilical cord blood by gas chromatography–mass spectrometry", author = "Panagiota D. Nikolaou and Ioannis I. Papoutsis and Julia Atta-Politou and Sotiris A. Athanaselis and Chara A. Spiliopoulou and Antony C. Calokerinos and Constantinos P. Maravelias", journal = "Journal of Chromatography B", year = "2008", volume = "867", number = "2", pages = "219--225", publisher = "ELSEVIER BV", issn = "1570-0232", doi = "10.1016/j.jchromb.2008.04.006" }