1. Department of Applied Sciences, Faculty of Science Engineering and Technology, Buffalo City Campus, Walter Sisulu University, South Africa
2. Department of Mechanical Engineering, Olabisi Onabanjo University, 112104, Ibogun, Nigeria
3. Department of Mechanical and Aeronautical Engineering, University of Pretoria, Pretoria 0002, South Africa
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan