1. Kohat University of Science and Technology (KUST), Kohat, Pakistan
2. College of Business, Administration, Al-Ain University Abu-Dhabi, Abu-Dhabi, United Arab Emirates
3. Department of Economics, National University of Modern Languages (NUML), Islamabad, Pakistan
4. College of Islamic Studies, Qatar Foundation, Hamad Bin Khalifa University, Ar-Rayyan, Qatar