1. Medical Department, RedAid Nigeria , Enugu 400001 Enugu State , Nigeria
2. Tahir Dahiru, Medical Department, Leprosy and Tuberculosis Relief Initiative , Jos 930252 Plateau State , Nigeria
3. Department of Medicine, College of Health Sciences, Ebonyi State University , Abakaliki 480214 Ebonyi State , Nigeria
4. Department of Medical Physiology, College of Health Sciences, David Umahi Federal University of Health Sciences , Uburu 491101 Ebonyi State , Nigeria
5. National Tuberculosis and Leprosy Control Programme, Federal Ministry of Health , Abuja 900211, Nigeria