1. Department of Population Sciences, City of Hope, Duarte, California, USA;
2. University of Arizona, Tucson, Arizona, USA;
3. The University of Alabama at Birmingham, Birmingham, Alabama, USA;
4. Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon, USA;
5. Kaiser Permanente Northern California Division of Research, Oakland, California, USA;
6. Corporal Michael J. Crescenz Veterans Affairs Medical Center and Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA