1. Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, California
2. Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine, Los Angeles, California
3. Diabetes Research Center, University of Southern California Keck School of Medicine, Los Angeles, California
4. Department of Preventive Medicine, University of Southern California Keck School of Medicine, Los Angeles, California