Mustafa İnan1, Andrei Racu2, Marko Bjeloševiča3, Nazarii Hryniv4. 1. Department of Pediatric Surgery, Trakya University School of Medicine, Edirne, Turkey. 2. Renewable Energy - Photovoltaic Laboratory, INCEMC Timisoara, Romania. 3. Department of Paediatric Cardiology, Comenius University School of Medicine, Bratislava, Slovakia. 4. Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine.