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Iran
Esophageal Neoplasms
Squamous Cell Carcinoma
Stomach Neoplasms
Risk Factors
Incidence
Cohort Studies
Prevalence
Early Modern 1451-1600 History
Databases as Topic
Opium
Smoking
Alcohol Drinking
Case Control Studies
Esophagoscopy
Population Surveillance
Mass Screening
Diet Surveys
Tea
Cardia
Co-Publications
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