About the Authors

Dimitrios Paraskevis

Affiliation National Retrovirus Reference Center, Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece

Georgios Nikolopoulos

Affiliations Hellenic Center for Disease Control and Prevention, Athens, Greece, National Development and Research Institutes (NDRI), New York, New York, United States of America

Anastasios Fotiou

Affiliation Greek REITOX Focal Point of the EMCDDA at the University Mental Health Research Institute (UMHRI), Athens, Greece

Chrissa Tsiara

Affiliation Hellenic Center for Disease Control and Prevention, Athens, Greece

Dimitra Paraskeva

Affiliation Hellenic Center for Disease Control and Prevention, Athens, Greece

Vana Sypsa

Affiliation National Retrovirus Reference Center, Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece

Marios Lazanas

Affiliation 3rd Department of Internal Medicine, Hellenic Red Cross Hospital, Athens, Greece

Panagiotis Gargalianos

Affiliation 1st Department of Internal Medicine, Athens General Hospital “G. Gennimatas”, Athens, Greece

Mina Psichogiou

Affiliations National Retrovirus Reference Center, Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece, 1st Department of Propaedeutic Medicine, Athens University Medical School, Laiko Hospital, Athens, Greece

Athanasios Skoutelis

Affiliation 5th Department of Medicine and Infectious Diseases, “Evangelismos” General Hospital, Athens, Greece

Lucas Wiessing

Affiliation European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal

Samuel R. Friedman

Affiliation National Development and Research Institutes (NDRI), New York, New York, United States of America

Don C. d. e. s. Jarlais

Affiliation Beth Israel Medical Centre, New York, New York, United States of America

Manina Terzidou

Affiliation Greek REITOX Focal Point of the EMCDDA at the University Mental Health Research Institute (UMHRI), Athens, Greece

Jenny Kremastinou

Affiliation Hellenic Center for Disease Control and Prevention, Athens, Greece

Meni Malliori

Affiliation Organisation Against Drugs (OKANA), Athens, Greece

Angelos Hatzakis

ahatzak@med.uoa.gr

Affiliation National Retrovirus Reference Center, Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AH Dimitrios Paraskevis GN. Analyzed the data: Dimitrios Paraskevis GN VS. Wrote the paper: AH Dimitrios Paraskevis GN. Oversaw clinical studies and enrolled patients: ML PG MP AS. Obtained funding: AH. Oversaw data collection: AF CT Dimitra Paraskevis. Participated in the study design: MT JK MM. Reviewed drafts of the report: LW SF DCJ. Approved the final version of the manuscript: Dimitrios Paraskevis GN AF CT Dimitra Paraskeva VS ML PG MP AS LW SF DCJ MT JK MM AH.