1. Department of Urology, School of Medicine, the University of Texas Health Science Center San Antonio, San Antonio, TX, USA
2. Department of Medicine/Hematology & Medical Oncology, School of Medicine, the University of Texas Health Science Center San Antonio, San Antonio, TX, USA
3. Department of Internal Medicine, Division of Infectious Diseases, Allergy and Immunology, Saint Louis University Edward A. Doisy Research Center, .St. Louis, MO, USA
4. Department of Epidemiology and Biostatistics, School of Medicine, the University of Texas Health Science Center San Antonio, San Antonio, TX, USA
5. Pediatrics, M.D. Anderson Cancer Center, Houston, TX, USA