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1. Utilizing existing databases / Deborah Grady, Norman Hearst Analítico Availability No copies available

2. Implementing the study and quality control / Deborah Grady, Stephen B. Hulley Analítico Availability No copies available

3. Designing a randomized blinded trial / Steven R. Cummings, Deborah Grady, Stephen B. Hulley Analítico Availability No copies available

4. Alternative trial designs and implementation issues / Deborah Grady, Steven R. Cummings, Stephen B. Hulley Analítico Availability No copies available