Aleksandar Štulhofer, PhD, is full professor of sociology, Head of Sexology Unit at the Department of Sociology, Faculty of Humanities and Social Sciences, University of Zagreb.

Ivan Landripet, PhD, is an assistant professor at the Department of Sociology, Faculty of Humanities and Social Sciences, University of Zagreb.

Goran Koletić, PhD, is a teaching assistant at the Department of Sociology, Faculty of Humanities and Social Sciences, University of Zagreb.

Tanja Jurin, PhD, is a post-doctoral researcher and a teaching assistant at the Department of Psychology, Faculty of Humanities and Social Sciences, University of Zagreb.

Goran Milas, PhD, is a research advisor and the Head of the Centre for the Individual Differences Research at the Institute of Social Sciences Ivo Pilar in Zagreb, Croatia. He is also an adjunct full professor of psychology at the Department of Psychology at the Studia Croatica, University of Zagreb.

Azra Tafro, PhD, is an assistant professor at the University of Zagreb Faculty of Forestry and an adjunct lecturer at the Rochester Institute of Technology in Zagreb.

Ivana Božičević, MD, MSc, PhD, is an associate professor at the School of Medicine, University of Zagreb, and director of the WHO Collaborating Centre for HIV Strategic Information at the School of Medicine, University of Zagreb.

Tatjana Nemeth-Blažić, MD, chief of medicine, is an epidemiologist and the Head of the Department of responsible sexual behavior promotion and counseling at the Health promotion Service, as well as the Head of the HIV/AIDS Register at the Croatian Institute of Public Health.

Mirjana Lana Kosanović Ličina, MD, chief of medicine, is an epidemiologist and the Head of the Communicable disease epidemiology department at Andrija Štampar Teaching Institute of Public Health of the School of Medicine, University of Zagreb.

Valerio Baćak, PhD, is an assistant professor at the School of Criminal Justice at Rutgers University, New Jersey.

Sandra Šević is a doctoral student/research assistant.