1. Division of Endocrinology, Department of Pediatrics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
2. Department of Health and Life Sciences Librarian, Nursing, Biomedical Library, University of California Los Angeles, Los Angeles, CA, USA.
3. Center for Endocrinology, Diabetes, and Metabolism, Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA.