1 Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California; Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, California.
2 Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California; Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California.
3 Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California.
4 Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
5 Lawrence J. Ellison Institute of Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
6 Division of Gastroenterology, Departments of Medicine, Cedars-Sinai Medical Center; Department of Veterans Affairs, Los Angeles, California.
7 Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California; Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
8 Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California; Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California; Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.