M Ellaithi1,2,3*
, T Nilsson4*
, D Gisselsson4*
, A Elagib5
, H Eltigani6
and I Fadl-Elmula7,8 
1
Institute of Endemic Diseases, University of Khartoum, Khartoum, Sudan
2
International University of Africa, Faculty of Medicine and Health Sciences, Khartoum, Sudan
3
The Orchids Society for Congenitally Malformed Children. Khartoum, Sudan
4
Department of Clinical Genetics, Lund University, Lund, Sweden
5
Tropical Medical Research Institute, Khartoum, Sudan
6
Department of Anatomy, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
7
Faculty of Medical Laboratory Sciences, Al Neelain University, Khartoum, Sudan
8
Al Neelain Medical Centre, Al Neelain University, Khartoum, Sudan