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Option Grids to facilitate shared decision making for patients with Osteoarthritis of the knee: protocol for a single site, efficacy trial

Katy Marrin, Fiona Wood*, Jill Firth, Katharine Kinsey, Adrian Edwards, Kate E Brain, Robert G Newcombe, Alan Nye, Timothy Pickles, Kamila Hawthorne and Glyn Elwyn

BMC Health Services Research 2014, 14:160  doi:10.1186/1472-6963-14-160