Amr Alemairy

Faculty of Medicine, University of Khartoum, Khartoum, Sudan

Hayder Abu Ahmed

Department of Community Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan

Zeinab Swareldahab

Department of Community Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan

Fadwa Saad

Department of Community Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan

Ahmed Alaimeri

Faculty of Medicine, University of Gezira, Gezira, Sudan

Abeer Alemairy

Faculty of Medicine, University of Kassala, Kassala, Sudan

Mohamed Elhassan

Faculty of Medicine, University of Khartoum, Khartoum, Sudan