Dr. Hans Christian Erichsen Consultant in Paediatric Immunology Dept. Pediatric Hematology-Oncology Head of Section of Clinical Pediatric Immunology Rikshospitalet Div. of Paediatric and Adolescent Medicine Oslo University Hospital Midtoddveien 17A N-0494 Oslo E-Mail: haeric@ous-hf.no Internet: https://www.ous-research.no/home/abrahamsen/home/8032 ‹ Italy up Poland › Deutsch