{"source":"website","style":"apa","website": {"title":"Environmental Health Perspectives" },"contributors": [{"function":"author","last":"National Institute of Environmental Health Sciences.,"} ],"pubtype": {"main": "pubonline"},"pubonline": {"title":"Environmental Health Perspectives","url":"http://libaccess.mcmaster.ca/login?url=http://infotrac.galegroup.com/itw/infomark/1/1/1/purl=rc18%5fAONE%5F0%5F%5Fjn+%22Environmental+Health+Perspectives%22?sw_aep=ocul_mcmaster"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"181819367","issn":"0091-6765"}