Yale University School of Medicine, New Haven, Connecticut, United States
University of Pennsylania, Philadelphia, Pennsylvania, United States
Depression Research Unit - University of Pennsylvania, Philadelphia, Pennsylvania, United States
Tobacco Use Research Center, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Transdisciplinary Tobacco Use Research Center, Philadelphia, Pennsylvania, United States
Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States