1. Charles University in Prague, 2nd Faculty of Medicine, Department of Child and Adolescent Psychiatry, University Hospital Motol, Prague, Czech Republic.
2. Charles University in Prague 1st Faculty of Medicine, Department of Psychiatry, General Teaching Hospital Prague, Prague, Czech Republic.
3. Department of Psychiatry, University of Mississippi Medical Center, Department of Psychiatry and Human Behavior, Medical director of Child Psychiatry, Jackson, Mississippi.