1. Department of Advertising, Public Relations and Audiovisual Communication, Faculty of Communication Sciences, Universitat Autònoma de Barcelona (UAB), Barcelona, Catalonia, Spain
2. Al-Qadir University Project Trust, Jhelum, Punjab, Pakistan
3. School of Management, University of Innsbruck, Innsbruck, Tyrol, Austria
4. Current affiliation: Department of Industrial and System Engineering, The Hong Kong Polytechnic University, Hong Kong