1. National Telecommunications Corporation – Public Company, CNT EP, Quito, Ecuador
2. Department of Software Engineering, University of Granada, Granada, Spain
3. Department of Business Management and Marketing, Complutense University of Madrid, Madrid, Spain
4. Andalusian Research Institute in Data Science and Computational Intelligence, University of Granada, Granada, Spain; Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah, Saudi Arabia