front-of-package labeling system
... that an investigation found that most Mexican nutrition science students could not interpret a nutritional front-of-package labeling system correctly?
... that an investigation found that most Mexican nutrition science students could not interpret a nutritional <b id="mwBhQ"><a href="./Food_labeling_in_Mexico" id="mwBhU" rel="mw:WikiLink" title="Food labeling in Mexico">front-of-package labeling system</a></b> correctly?