1 Department of Internal Medicine, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA; Division of Cardiovascular Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.
2 Division of Biostatistics, University of Utah School of Medicine, Salt Lake City, Utah, USA.
3 Department of Internal Medicine, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA; Division of Nephrology and Hypertension, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.
4 Division of Cardiovascular Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.
5 Department of Cardiology, Institute of Clinical and Experimental Medicine, Prague, Czech Republic.
6 Department of Internal Medicine, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA; Division of Cardiovascular Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA. Electronic address: josef.stehlik@hsc.utah.edu.