Debabrata Mukherjee1, Thomas F Whayne2. 1. Division of Cardiovascular Medicine, Texas Tech University HSC, and Paul Foster School of Medicine, El Paso, Texas, USA. debabrata.mukherjee@ttuhsc.edu. 2. Division of Cardiovascular Medicine, Gill Heart Institute, University of Kentucky, Lexington, Kentucky, USA 326 Wethington Building 900 South Limestone Street Lexington, KY 40536-0200, USA. twhayn0@uky.edu.