1. Department of Obstetrics and Gynaecology, BC Children’s Hospital Research Institute, BC Women’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
2. Department of Clinical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
3. Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
4. Sohag University, Sohag, Egypt