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±ºÁý ¹«ÀÛÀ§ ½ÃÇè(cluster randomised trial)

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Helen Moore, Carolyn D Summerbell, Darren C Greenwood, Philip Tovey, Jacqui Griffiths, Maureen Henderson, Kate Hesketh, Sally Woolgar and Ashley J Adamson. Improving management of obesity in primary care: cluster randomised trial.
BMJ 2003; 327:1085.



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