1. Department of Pediatric, Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon.
2. Department of Laboratory Sciences, Faculty of Public Health, Islamic University of Lebanon, Khalde, Lebanon.
3. Department of Biology, Faculty of Sciences, Lebanese University, Nabatieh, Lebanon.
4. Department of Mathematics, Faculty of Sciences, Lebanese University, Nabatieh, Lebanon.
5. Department of Mathematics, School of Arts and Sciences, Lebanese International University, Beirut, Lebanon.
6. Division of Neonatology, Department of Pediatric, Sheikh Ragheb Harb University Hospital, Toul, Lebanon.