1. Department of Psychiatry, John Stroger Hospital of Cook County, Chicago, IL, USA;
2. Division of Adolescent Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, USA;
3. Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, USA;
4. AIDS Foundation of Chicago, Chicago, IL, USA;
5. School of Public Health, University of Michigan, Ann Arbor, MI, USA;
6. Division of Adolescent Medicine, John Stroger Hospital of Cook County, Chicago, IL, USA