Affiliation: | 1. 1st Department of Pathology, Faculty of Medicine, Prague, Czechoslovakia 2. 2nd Paediatric Clinic, Paediatric Faculty, Prague, Czechoslovakia 3. Paediatric Clinic, Faculty of Medicine, Hradec Králové, Czechoslovakia 4. 4th Paediatric Clinic, Faculty of Medicine, Prague, Czechoslovakia 5. Department of Genetics, Paediatric Faculty, Prague, Czechoslovakia
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