1. Department of Community Medicine, College of Medical Sciences, Rivers State University, Port Harcourt 500262, Nigeria
2. Department of Public Health Sciences, College of Medical Sciences, Rivers State University, Port Harcourt 500262, Nigeria
3. Department of Human Kinetics, Health and Safety Education, Ignatius Ajuru University of Education, Rumuolumeni, Port Harcourt 500102, Nigeria
4. Department of Obstetrics and Gynaecology, College of Medical Sciences, Rivers State University, Port Harcourt 500262, Nigeria
5. Department of Nursing Sciences, College of Medical Sciences, Rivers State University, Port Harcourt 500262, Nigeria
6. Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine, University of Ibadan, Ibadan 200005, Nigeria
7. Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB24 3FX, UK