University of California - Los Angeles, Los Angeles, California, United States
University of Pennsylvania Health System, Philadelphia, Pennsylvania, United States
Duke University Medical Center, Durham, North Carolina, United States
Duke University Health System, Durham, North Carolina, United States
Duke University Medical Center, Durham, North Carolina, United States
Duke University Medical Center, Durham, North Carolina, United States
Duke University Medical Center, Durham, North Carolina, United States
Duke University Medical Center, Durham, North Carolina, United States
The University of Pittsburgh, Pittsburgh, Pennsylvania, United States
The University of Nebraska Medical Center, Omaha, Nebraska, United States
University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, United States
Duke University, Durham, North Carolina, United States
Sentara Cardiovascular Research Institute, Norfolk, Virginia, United States
Duke University Medical Center, Durham, North Carolina, United States
Duke University, Durham, North Carolina, United States