1. Department of Optometry and Visual Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
2. Department of Biological Sciences, Purdue University, West-Lafayette, Indiana, USA
3. Department of Clinical Medicine, Chengde Medical University, Hebei, China
4. Department of Applied Science and Mechatronics, HM Hochschule München University of Applied Sciences, Munich, Germany