[1] Oita University,Department of Microbiology, School of Medicine
[2] Gazi University,Department of Medical Microbiology, Faculty of Medicine
[3] Gazi University,Department of Pediatric Gastroenterology, Faculty of Medicine
[4] Ministry of Health Ankara Training and Education Hospital,Department of Pediatrics
[5] Oita University,Division of Infectious Diseases, Department of Social and Environmental Medicine, Institute of Scientific Research