Affiliation: | 1. Department of Paediatrics, Faculty of Medicine, Kuwait University, PO Box 24923, Safat, Kuwait 13110;2. Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Kuwait;3. Department of Neonatology, Al-Sabah Maternity Hospital, Kuwait;4. Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait |