Ewha Womans University, Ewha Womans University - Institute of Ewha–Seoul Clinical Laboratories for Environmental Health (IESEH), Yale University - School of the Environment, Ewha Womans University, Yale University, Ewha Womans University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Ewha Womans University - Department of Environmental Medicine