1. David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
2. Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
3. Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
4. Section of Adolescent Medicine, Department of Pediatrics, Tulane University School of Medicine, New Orleans, Louisiana, USA
5. Nova Southeastern University, Fort Lauderdale, Florida, USA