1. School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo City, Henan Province, People’s Republic of China
2. Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia VW R, Canada + Department of Medical Research, China Medical University Hospital, China + Medical University, Taichung, Taiwan, Republic of China + Department of Mathematics and Informatics, Azerbaijan University, Baku, Azerbaijan + Section of Mathematics, International Telematic University Uninettuno, Rome, Italy