Xiaodong Wu,^1,2,3,* Naipy C. Perez,² Yi Zheng,^1,4 Xiaobo Li,⁴ Liuqing Jiang,⁴ Beatriz E. Amendola,² Benhua Xu,⁴ Nina A. Mayr,⁵ Jiade J. Lu,³ Georges F. Hatoum,⁶ Hualin Zhang,⁷ Sha X. Chang,⁸ Robert J. Griffin,⁹ Chandan Guha<sup>10

1</sup>a Executive Medical Physics Associates, North Miami Beach, Florida
²Innovative Cancer Institute, South Miami, Florida
³Department of Medical Physics, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai, China
⁴Department of Radiation Oncology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
⁵Department of Radiation Oncology, University of Washington School of Medline, Seattle, Washington
⁶JFK Comprehensive Cancer Institute, Lake Worth, Florida
⁷Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
⁸Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina
⁹Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas
¹⁰Department of Radiation Oncology Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, New York

^* Address for correspondence: Executive Medical Physics Associates, 19470 NE 22nd Road, North Miami Beach, FL 33179; email: drxiaodongwu@yahoo.com.