1. Department of Cardiothoracic Surgery Medani Heart Diseases and Surgery Center ElGezira Sudan
2. Department of Pediatric Cardiology Medani Heart Diseases and Surgery Center ElGezira Sudan
3. University of Bakht AlrudaMedani Heart Diseases and Surgery Center ElGezira Sudan
4. Faculty of Medicine University of Khartoum Khartoum Sudan
5. Medicine Department Gadarif University Faculty of Medicine and Health Sciences Al Qadarif Sudan