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Optimising recruitment into a study of physical activity in older people: a randomised controlled trial of different approaches |
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| Authors: | Harris Tess J Carey Iain M Victor Christina R Adams Rika Cook Derek G |
| Institution: | Division of Community Health Sciences, St George's, University of London, Cranmer Terrace, Tooting, London, SW17ORE, UK. tharris@sgul.ac.uk |
| Abstract: | |
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| 本文献已被 PubMed 等数据库收录！ | |