1. From the Mayo Clinic, Rochester, Minnesota; University of California, San Francisco, San Francisco, California; University of Arizona College of Medicine–Phoenix, Phoenix, Arizona; Columbia University Mailman School of Public Health, New York, New York; MedStar Georgetown University Hospital, Washington, DC; Johns Hopkins University School of Medicine, Baltimore, Maryland; New York University, New York, New York; George Mason University, Fairfax, Virginia;
2. and Purdue University, West Lafayette, Indiana.