[1] Duke Univ, Med Ctr, Pain Prevent & Treatment Res Program, Durham, NC 27706 USA
[2] Duke Univ, Dept Psychiat & Behav Sci, Med Ctr, Durham, NC 27706 USA
[3] Duke Univ, Med Ctr, Duke Cognit Behav Res & Treatment Program, Durham, NC 27706 USA
[4] Duke Univ, Med Ctr, Biol Psychiat & Anesthesiol, Durham, NC 27706 USA
[5] Duke Univ, Med Ctr, Anesthesiol, Durham, NC 27706 USA
[6] VA San Diego Healthcare Syst, San Diego, CA USA
[7] VA San Diego Healthcare Syst, Posttraumat Stress Program, Neurobiol, San Diego, CA USA