1. ; Faculty of Medicine Department of Medical Biology; Hacettepe University; Ankara Turkey
2. OASI Istituto per la Ricerca sul Ritardo Mentale e l'Involuzione Cerebrale (IRCCS); Troina (EN) Italy
3. ; Istituto di Biologia, Facoltà di Medicina e Chirurgia; Università degli Studi di Palermo; Palermo Italy
4. ; Institute of Child Health, Department of Metabolism and Nutrition Ankara; Hacettepe University; Turkey
5. ; Institute of Child Health, TUBITAK, DNA-Cell Bank and Research Laboratories; Hacettepe University; Ankara Turkey