title: Effect of duration of exposure on diarrhea due to enterotoxigenic Escherichia coli in travelers from the United States to Mexico.
mesh_terms: D000328:Adult; D003967:Diarrhea / Q000209:etiology*; D004927:Escherichia coli Infections / Q000175:diagnosis*; D006801:Humans; D008800:Mexico; D013997:Time Factors; D014481:United States / Q000208:ethnology