University of Texas, USA
                        University of Southern California, USA
                        University of Dundee, UK
                        Consultant Neurologist, Australia
                        Yale University School of Medicine, USA
                        Wilfrid Laurier University, Canada
                        Texas A&M University, USA
                        University of Oslo, Canada
                        Individual Researcher, Germany
                        Fuyang Normal University, Chile
                        State University of São Paulo, Brazil
                        Xi’an Jiaotong University, China
                        Research Centre for Natural Sciences, Hungary
                        Qingdao University, China
                        University of Carthage, Tunisia
                        Université Clermont Auvergne, Institut Pascal,, Tunisia
                        IIT Delhi, India
                        Chung-Ang University, South Korea
                        Become, Tunisia
                        Tashkent State Technical University, Uzbekistan