[1
]
Department of Paediatrics, Faculty of Medicine, University of Khartoum; and Department
of Paediatric Cardiology, Sudan Heart Centre, Khartoum, Sudan. Email: sulafaali2000@gmail.com.
[2
]
Department of Paediatric Cardiology, Sudan Heart Centre, Khartoum, Sudan.
[3
]
Department of Paediatrics, Niyala Hospital, South Darfur, Sudan.
[4
]
Department of Statistics, Faculty of Mathematical Sciences, University of Khartoum,
Sudan; and Department of Public Health, College of Health Sciences, Qatar University,
Doha, Qatar.