1. Department of Global Health and Population; Harvard University; Boston MA USA
2. Department of Medical Biochemistry; Faculty of Medicine; University of Khartoum; Khartoum Sudan
3. Department of Community Medicine; School of Medicine; Ahfad University for Women; Khartoum Sudan
4. Lipidomics and Nutrition Research Centre; Faculty of Life Sciences and Computing; London Metropolitan University; London UK
5. School of Nursing Sciences; University of Khartoum; Khartoum Sudan
6. Department of Statistics; Faculty of Mathematical Sciences; University of Khartoum; Khartoum Sudan
7. School of Pharmacy and Biomedical Sciences; University of Portsmouth; Portsmouth UK
8. Department of Biostatistics; Harvard University; Boston MA USA