1. Department of Special Education and Therapy in Language and Communication Disorders, Julius Maximilians University, 97074 Wuerzburg, Germany
2. Department of Neuropediatrics, Children’s Hospital Aschaffenburg-Alzenau, 63739 Aschaffenburg, Germany
3. Department of Neuropediatrics and Social Pediatrics, Children’s Hospital and Polyclinic Wuerzburg, 97080 Wuerzburg, Germany