Author(s) affiliations:Tarek M. El Masry1, Mona A. M. Abou Zahra1, Mohammed M. El Tawil2, Rawhia A. Khalifa3
1Department of Clinical Pathology, Ain Shams University Hospital, Cairo, Egypt.
2Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
3Department of Clinical Pathology, Research Institute of Ophthalmology.