1. Department of Biostatistics, School of Medicine Shiraz University of Medical Sciences Shiraz Iran
2. Department of Hematology, Medical Oncology and Stem Cell Transplantation School of Medicine, Shiraz University of Medical Sciences Shiraz Iran
3. Department of Obstetrics and Gynecology, School of Medicine Shiraz University of Medical Sciences Shiraz Iran
4. Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry Shiraz University of Medical Sciences Shiraz Iran