1 Department of Psychiatry and Medical Psychology, Plovdiv Medical University, Plovdiv, Bulgaria.
2 Department of Psychiatry and Medical Psychology, University of Lisbon, Lisbon, Portugal.
3 Department of Psychology, University of Southern California, Los Angeles, CA, United States.
4 Information Systems Management, School of Computing and Information Systems, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, Australia.
5 Laboratoire de Psychologie Médicale et Addictologie, Université Libre de Bruxelles, Brussels, Belgium.