1. Department of Internal Medicine, Mayo Hospital, King Edward Medical University, Lahore, Pakistan
2. Department of Research, Medical Research Circle, Bukavu, DR Congo
3. Atal Bihari Vajpayee Institute of Medical Sciences and Dr Ram Manohar Lohia Hospital, ND, India
4. Department of Social and Behavioral Sciences, School of Public Health, Yale University, USA
5. La Sapientia Catholic University, Goma, DR Congo