1 Department of Psychiatry, Charité University Medicine, Berlin, Germany; Department of Psychiatry, District Hospital Prignitz, Perleberg, Germany; Brandenburg Medical School Theodor Fontane, Fehrbelliner Straße 38, 16816 Neuruppin, Germany. Electronic address: andres.neuhaus@charite.de.
2 Fraunhofer Institute for Open Communication Systems, Berlin, Germany.