1. Department of Medicine, Federal Medical Centre, Owo, Nigeria
2. Department of Internal Medicine, Federal Teaching Hospital, Katsina State, Nigeria
3. Department of Medicine, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
4. Department of Medicine, University College Hospital, Ibadan, Oyo State, Nigeria
5. Department of Nursing Science, Obafemi Awolowo University, Ile-Ife, Nigeria
6. Department of Nursing Science, University of Medical Sciences Teaching Hospitals Complex, Laje, Ondo State, Nigeria