1Professor of Pediatric infectious Disease, Department of Pediatrics, Mazandaran University of medical sciences, Booali Sina hospital, Pasdaran Boulevard, Sari, Iran
2Molecular and Cell-Biology Research Center, Faculty of Medicine, Mazandaran University of medical sciences, Sari, Iran
3Obstetrics-Gynocology Department, Mazandaran University of medical sciences, Sari, Iran
4Biostatistics Department, Mazandaran University of medical sciences, Sari, Iran
5Pathology Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran