He is an Associate Professor of Child and Adolescent Psychiatry and Director of the Department of Child Psychiatry, Athens University Medical School, “Aghia Sophia” Children’s Hospital, Athens, Greece. He has participated in many multicenter European projects (e.g. Psychotherapy of Childhood Depression, COSIP, Mental Health Europe, EDIG, CAMHEE). He has 60 publications in peer-reviewed international journals and chapters in books, and 30 Greek scientific publications. His main interests are mental health services for children and adolescents, post-traumatic stress, depression, mental health prevention and promotion interventions in children, mental health needs in young people with intellectual disabilities/autism, and use of questionnaires and semistructured psychiatric interviews in children and adolescents. He teaches medical students, child psychiatry trainees, mental health and general health professionals etc. He has been a board member of various scientific organizations (e.g. the Hellenic Society of Child and Adolescent Psychiatry) and committees.