Julia Huemer1
, Niranjan S Karnik2
, Sabine Voelkl-Kernstock1
, Elisabeth Granditsch1
, Kanita Dervic1
, Max H Friedrich1
and Hans Steiner3 
1
Medical University of Vienna, Department of Child and Adolescent Psychiatry, Waehringer Guertel 18-20, A-1090 Vienna, Austria
2
University of California San Francisco School of Medicine, Department of Anthropology, History & Social Medicine, 3333 California Street, Suite 485, San Francisco, CA 94143, USA
3
Stanford University School of Medicine, Child Psychiatry and Child Development, Department of Psychiatry and Behavioral Sciences, 401 Quarry Road, Stanford, CA, 94305-5719, USA