1. Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston
2. medical student at Baylor School of Medicine, Houston
3. Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston
4. Department of Cardiology, University of Texas MD Anderson Cancer Center, Houston5Division of Cardiovascular Medicine, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston
5. Department of Cardiology, University of Texas MD Anderson Cancer Center, Houston6Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston