[1] Vet Affairs Connecticut Healthcare Syst, Psychol Serv, W Haven, CT 06516 USA
[2] Yale Univ, Sch Med, Dept Psychiat, W Haven, CT 06516 USA
[3] Yale Univ, Sch Med, Dept Neurol, W Haven, CT 06516 USA
[4] Yale Univ, Sch Med, Dept Psychol, W Haven, CT 06516 USA
[5] Thomas Jefferson Univ, Jefferson Med Coll, Dept Anesthesiol, Jefferson Pain Ctr, Philadelphia, PA 19107 USA