title: Tea and cancer. And what of opium chewing?
authors.forename: Ralph
authors.initials: R
authors.lastname: Lucas
mesh_terms: D004938:Esophageal Neoplasms / Q000209:etiology*; D006801:Humans; D008409:Mastication; D009293:Opioid-Related Disorders / Q000150:complications*; D009892:Opium
chemical_list: D009892:Opium