sentences: "The Cesare Maltoni Cancer Research Center of the European Ramazzini Foundation of Oncology and Environmental Sciences (ERF) published studies claiming aspartame increases several malignancies in rodents, concluding it a potential carcinogen at normal dietary doses.An open letter from the Center for Science in the Public Interest (CSPI) to the FDA endorsed by thirteen occupational safety and health experts expressed the ERF studies merited reevaluation of aspartame's safety in humans.