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Subjects
- Fluoroscopy3
- Radiography3
- Esophageal Neoplasms1
- Esophagus -- diagnostic imaging1
- Food Contamination -- prevention & control1
- Food Handling -- methods1
- Gastritis1
- Hand Disinfection -- methods1
- Lung -- diagnostic imaging1
- Lung Neoplasms1
- Stomach -- diagnostic imaging1
- Stomach Neoplasms1
- Stomach Ulcer1
- Tuberculosis, Pulmonary -- therapy1