We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIncreased OPRM1 DNA methylation in lymphocytes of methadone-maintained former heroin addicts.AuthorsNielsen DA; Yuferov V; Hamon S; Jackson C; Ho A; Ott J; Kreek MJPublicationNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2009, Vol 34, Issue 4, p867ISSN1740-634xPublication typearticleDOI10.1038/npp.2008.108