1. United States Drug Testing Laboratories, Inc. (AEB) Des Plaines Illinois
2. UCLA Counseling and Psychological Services (NH) University of California Los Angeles Los Angeles California
3. Department of Psychiatry and Behavioral Sciences (EO, MF) Northwestern University Feinberg School of Medicine Chicago Illinois
4. Facultad de Medicina (RM) Universidad de la República Montevideo Uruguay
5. Universidade Federal de São Paulo (NS) Clínica Obstétrica da Maternidade Escola de Vila Nova Cachoeirinha São Paulo Brazil
6. Escola de Vila Nova Cachoeirinha (MAM) São Paulo Brazil
7. Facultad de Odontologia (MM) Universidad de la República Montevideo Uruguay
8. Hospital General de las Fuerzas Armadas de Uruguay (MCJ, PC) Montevideo Uruguay