1 Department of Psychiatry, Neurology, Psychotherapy and Psychosomatics in Childhood and Adolescence, Rostock University Medical Center, German Center for Child and Adolescent Health (DZKJ), Site Greifswald/Rostock, Germany. Electronic address: Hannes.brehme@med.uni-rostock.de.
2 Oscar Langendorff Institute of Physiology, Rostock University Medical Center, Rostock, Germany.
3 Department of Psychiatry, Neurology, Psychotherapy and Psychosomatics in Childhood and Adolescence, Rostock University Medical Center, German Center for Child and Adolescent Health (DZKJ), Site Greifswald/Rostock, Germany.