Epigenotyping in Peripheral Blood Cell DNA and Breast Cancer Risk: A Proof of Principle Study Widschwendter, Martin ; Apostolidou, Sophia ; Raum, Elke ; Rothenbacher, Dietrich ; Fiegl, Heidi ; Menon, Usha ; Stegmaier, Christa ; Jacobs, Ian J. ; Brenner, Hermann Abstract Publication: PLoS ONE Pub Date: July 2008 DOI: 10.1371/journal.pone.0002656 Bibcode: 2008PLoSO...3.2656W