Unchanging pattern of prevalence of esophageal cancer, overall and by histological subtype, in the endoscopy service of the main referral hospital in the central region of Rio Grande do Sul State, in Southern Brazil
Unchanging pattern of prevalence of esophageal cancer, overall and by histological subtype, in the endoscopy service of the main referral hospital in the central region of Rio Grande do Sul State, in Southern Brazil
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