[1] Univ N Carolina, Dept Psychiat, Neurosci Hosp 10616, Chapel Hill, NC 27599 USA
[2] Univ N Carolina, Dept Psychiat, Womens Mood Disorders Ctr, Chapel Hill, NC 27599 USA
[3] Univ Texas SW Med Ctr Dallas, Dept Psychiat, Dallas, TX 75390 USA
[4] Univ Texas SW Med Ctr Dallas, Dept Clin Sci, Dallas, TX 75390 USA
[5] Dallas VA Med, Ctr, Dallas, TX USA