Institution: | 1. Prenatal Diagnosis & Fetal Medicine Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt;2. Fetal Medicine Unit, Cairo University, Cairo, Egypt;3. Human Cytogenetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt;4. Clinical Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt |