1. Faculty of Computer Science & Information Technology, Universiti Malaya, Kuala Lumpur 50603, Malaysia
2. Prince Sattam Bin Abdulaziz University, College of Computer Engineering and Sciences, P.O. Box 151, Alkharj 11942, Saudi Arabia
3. Department of Information Technology, College of Computer and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
4. Department of Information Technology, Bahauddin Zakariya University, Multan 60000, Pakistan