1. Department of Dermatology, National Hospital Center, Nouakchott, Mauritania
2. National Institute for Public Health Research, Nouakchott, Mauritania
3. Nouakchott Faculty of Medicine, Nouakchott, Mauritania
4. Histopathology Department, National Hospital Center, Nouakchott, Mauritania
5. Mycetoma Research Center, Khartoum, Sudan