1. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
2. Departments of Medicine and Epidemiology and Biostatistics, Chao Family Comprehensive Cancer Center, University of California, Irvine, CA, USA
3. Children’s Hospital Los Angeles, Los Angeles, CA, USA
4. USC Norris Comprehensive Cancer Center, Los Angeles, CA, USA
5. Department of Dermatology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
6. VA Greater Los Angeles Health Care System, Los Angeles, CA, USA
7. Public Health Sciences, Fred Hutchinson Cancer Center, Seattle, WA, USA
8. Department of Epidemiology, University of Washington, WA, USA
9. Department of Pediatric Hematology Oncology and Bone Marrow Transplantation, Cleveland Clinic Children’s Hospital, Cleveland, OH, USA