Elba M. Abril Valdez, Center for Research in Nutrition and Development, Mexico

Benjamín Domínguez Trejo, National University of Mexico, Mexico

Mario Enrique Rojas Russell, National University of Mexico, Mexico

Carlos Salavera Bordás, University of Zaragoza, Spain

Juan Carlos Sierra, University of Granada, Spain

Eva Urbón Ladrero, University of Zaragoza, Spain

Ma. de los Ángeles Vacio Muro, Autonomous University of Aguascalientes, Mexico