Anthony S Zannas1,2,3,4. 1. Department of Psychiatry, University of North Carolina, Chapel Hill, NC, USA. 2. Department of Genetics, University of North Carolina, Chapel Hill, NC, USA. 3. Department of Psychiatry & Behavioral Sciences, Duke University Medical Center, Durham, NC, USA. 4. Institute for Trauma Recovery, University of North Carolina, Chapel Hill, NC, USA.