1. Children's Hospital of the University Medical Center, Münster, Germany
2. Medizinische Klinik und Poliklinik IV, Klinikum d. Universität München, Munich, Germany
3. Epilepsy Center, Kork-Kehl, Germany
4. Children's Hospital of the University Medical Center, Gießen, Germany
5. Pediatric Immunology, Children's Hospital, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
6. DBZ, Vivantes Klinikum Neukölln, Berlin, Germany
7. Children's Hospital of the Dr. Horst-Schmidt-Kliniken, Wiesbaden, Germany