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Start Over Formats Moving image ✖Remove constraint Formats: Moving image Collections NLM Publications and Productions ✖Remove constraint Collections: NLM Publications and Productions Subjects Medicine ✖Remove constraint Subjects: Medicine Titles Medical questions: MEDLINE has answers ✖Remove constraint Titles: Medical questions: MEDLINE has answers Dates by Range 1950-1999 ✖Remove constraint Dates by Range: 1950-1999

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