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Eloniemi-Sulkava U, Saarenheimo M, Laakkonen ML, Pietilä M, Savikko N, Kautiainen H, Tilvis RS, Pitkälä KH.Eloniemi-Sulkava U, et al.J Am Geriatr Soc. 2009 Dec;57(12):2200-8. doi: 10.1111/j.1532-5415.2009.02564.x.J Am Geriatr Soc. 2009.PMID: 20121986Clinical Trial.