1. Department of Paediatrics and Adolescent Medicine, General University Hospital, Prague, Czech Republic
2. Department of Tuberculosis and Respiratory Disorders, General University Hospital, Prague, Czech Republic
3. Department of Internal Medicine II, Cardiovascular Medicine, General University Hospital, Prague, Czech Republic
4. Department of Surgery II, Cardiovascular Surgery, General University Hospital, Prague, Czech Republic
5. University Hospital Ostrava, Clinic of Paediatrics, Czech Republic