Detection of early stage pancreatic cancer using 5-hydroxymethylcytosine signatures in circulating cell free DNA oleh Gulfem D. Guler, Yuhong Ning, Chin-Jen Ku, Tierney Phillips, Erin McCarthy, Christopher K. Ellison, Anna Bergamaschi, Francois Collin, Paul Lloyd, Aaron Scott, Michael Antoine, Wendy Wang, Kim Chau, Alan Ashworth, Stephen R. Quake, Samuel Levy