1. Universidad Pontificia Comillas, ICADE – Faculty of Economics and Business Administration, Department of Economics, Madrid, Spain.
2. Department of Economics, Universidad Autónoma de Madrid, Madrid, Spain; and Erasmus Research Institute of Management, Erasmus University, Rotterdam, the Netherlands. and
3. Department of Economics, Universidad Autónoma de Madrid, Madrid, Spain; and Lawrence R. Klein Institute, Universidad Autónoma de Madrid, Madrid, Spain.