Depression Research Unit, Univ Penn, Philadelphia, Pennsylvania, United States
Center for the Treatment and Study of Anxiety, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Center for Anxiety, University of Pennsylvania, Philadelphia, Pennsylvania, United States
Treatment Research Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Duke Univ. Med. Ctr., Durham, North Carolina, United States
Univ of Pennsylvania, Philadelphia, Pennsylvania, United States