1. United States Department of Agriculture Agricultural Research Service, Southern Regional Research Center, Food Processing & Sensory Quality Research Unit New Orleans Los Angeles USA
2. Doctorate Program on Natural Science for the Development and Agronomy Engineering School, Technology Institute of Costa Rica (ITCR) San Carlos Technology Local Campus, Alajuela, Ciudad Quesada Costa Rica USA
3. United States Department of Agriculture Agricultural Research Service, Dale Bumpers National Rice Research Center Stuttgart Arkansas USA