What's right and what's left?
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RL
Koretz
D000236:Adenoma / Q000473:pathology*; D003106:Colon / Q000473:pathology*; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000473:pathology*; D006801:Humans; D008403:Mass Screening; D012307:Risk Factors; D012812:Sigmoidoscopy