1. Department of StatisticsQuaid‐i‐Azam University Islamabad Pakistan
2. Faculty of Health StudiesUniversity of Bradford Bradford UK
3. Bradford Institute for Health ResearchBradford Teaching Hospitals NHS Foundation Trust Bradford UK
4. Arriyadh Community CollegeKing Saud University Riyadh Saudi Arabia
5. College of Bussiness AdministrationKing Saud University Riyadh Saudi Arabia