1. Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Mala Hora 4C, 036 01 Martin, Slovak Republic.
2. Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Mala Hora 4D, 036 01 Martin, Slovak Republic.
3. Pediatric Cardiology, Kollarova 13, 036 01 Martin, Slovak Republic.
4. Research Center, St. Anne’s University Hospital Brno, 656 91 Brno, Czech Republic; Institute of Scientific Instruments of the ASCR, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic.
5. Psychiatric Clinic, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, University Hospital Martin, Kollarova 2, 036 59 Martin, Slovak Republic.
6. Department of Neonatology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, University Hospital Martin, Kollarova 2, 036 59 Martin, Slovak Republic.