University of Pennsylvania Hospital, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Clinical Trials Unit. University of Pennsylvania, Philadelphia, Pennsylvania, United States
Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States
Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, United States
Pennsylvania Hospital, Philadelphia, Pennsylvania, United States
Center for Interdiscplinary Research on Nicotine Addiction, University of Pennsylvania, Philadelphia, Pennsylvania, United States
Pennsylvania Hospital, Philadelphia, Pennsylvania, United States
Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Abramson Cancer Center of the University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Maryland Greenebaum Cancer Center, Baltimore, Maryland, United States