Über den Autor Homero
Homero Indalecio Carrera Machado, Associate Professor, Department of Psychiatry, Faculty of Medicine, University of Santiago de Compostela. Specialist Physician Area, Drug Addiction Care Unit (ACLAD), A Coruña. Spain.Luis Isidoro Alfonzo Bello, Former Regional Advisor on Substance Use for PAHO/WHO and CICAD/OAS, Washington DC, USA.Adelino Fernando Vale Ferreira, Manager, Drug Addiction Prevention Commission of Porto, Portugal.