aCenter for Advanced Heart and Lung Disease, Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center

bDivision of Cardiology, Department of Advanced Heart Failure, Mechanical Support, and Transplant, Baylor Heart and Vascular Hospital, Dallas

cTexas A&M University College of Medicine, Bryan, Texas

Correspondence to Dr Timothy A. Gong, Center for Advanced Heart and Lung Disease, Baylor University Medical Center, 3410 Worth Street, Suite 250, Dallas, TX 75246, USA. Tel: +1 214 820 6856; e-mail: [email protected]