1. Senior researcher; National Food Safety Information Service; 136 Canggyeonggung-no Jongno-gu Seoul South Korea
2. Post-doctoral research associate, Department of Agricultural Economics and Agribusiness; University of Arkansas; 217 Agriculture Building, University of Arkansas Fayetteville AR 72701
3. Professor, Department of Food and Resource Economics; Korea University; Life Science East Building, Anam-dong 5-ga Seongbuk-gu Seoul South Korea
4. Distinguished Professor and Tyson Endowed Chair, Department of Agricultural Economics and Agribusiness; University of Arkansas; 217 Agriculture Building Fayetteville AR 72701