1. Mount Kenya University, Department of Community Health, P.O. Box 342-01000, Thika, Kenya
2. Jomo Kenyatta University of Agriculture & Technology, School of Public Health, P.O Box 62 000-00200, Nairobi, Kenya
3. School of Nursing, Jomo Kenyatta University of Agriculture & Technology, P.O Box 62 000-00200, Nairobi, Kenya