1. Institute of Statistics, Faculty of Economic and Administration Sciences, Universidad Austral de Chile, Valdivia, Chile
2. Institute of Mathematics and Statistics, Universidade de São Paulo, São Paulo, Brazil
3. School of Nutrition, Faculty of Medical Sciences and INICSA-CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina
4. School of Industrial Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile