Affiliations

• ¹ Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York, USA Department of Medicine, McGill University, Montreal, Quebec, Canada.
• ² Departments of Radiology, Medicine and Biomedical Engineering, University of Iowa, Iowa City, Iowa, USA.
• ³ Department of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA.
• ⁴ Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York, USA Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA.