Understanding controlled trials: What is a patient preference trial?

BMJ - Tập 316 Số 7128 - Trang 360-360 - 1998
David Torgerson1, Bonnie Sibbald2
1National Primary Care Research and Development Centre, Centre for Health Economics, University of York, York YO1 5DD
2National Primary Care Research and Development Centre, University of Manchester, Manchester M13 9PL

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