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