1. Department of Internal Medicine, University of Benin Teaching Hospital, Benin City, Edo State, Nigeria
2. Department of Internal Medicine, St. Barnabas Hospital SBH Health System, Bronx, New York, USA
3. College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
4. Department of Internal Medicine, East Tennessee State University, Johnson City, Tennessee, USA
5. Department of Internal Medicine, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
6. College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
7. All Saints University College of Medicine, Belair Kingstown, St. Vincent & The Grenadines
8. College of Medicine, University of Lagos, Lagos,Nigeria
9. Chukwuemeka Odumegwu Ojukwu University Teaching Hospital, Awka, Anambra State, Nigeria