1. Laboratory of Molecular Biology, Faculty of Natural Sciences and Mathematics, “Ss.Cyril and Methodius” University, Skopje, Macedonia
2. Genome Centre, GARH “Malinov”, Sofia, Bulgaria
3. Department of Medical Genetics, Medical University of Sofia, Sofia, Bulgaria
4. Department of Biology, Medical Genetics and Microbiology, Faculty of Medicine, Sofia University “St. Kliment Ohridski,” Sofia, Bulgaria
5. Department of Pediatric Cardiology, National Heart Hospital, Sofia, Bulgaria