1. Associate Professor, School of Civil and Environmental Engineering, National Univ. of Sciences and Technology, Sector H-12, Islamabad 44000, Pakistan; formerly, Postdoctoral Research Fellow, School of Property Construction and Project Management, RMIT Univ., City Campus, Melbourne, Victoria 3000, Australia (corresponding author). E-mail: choudhry03@gmail.com
2. Professor, Director, (Tsinghua-Gammon) Construction Safety Research Center, School of Civil Engineering, Tsinghua Univ., Beijing 100084, China.
3. Professor, School of Property Construction and Project Management, RMIT Univ., City Campus, Melbourne, Victoria 3000, Australia.