van 't Leven, N.; Graff, M. J. L. .; Vernooij-Dassen, M.; Olde Rikkert, M. G. M. Maud JL Graff. Effectiveness and Efficiency of Community Based Occupational Therapy for Older People With Dementia and Their Caregivers. TGG 2008, No. 5. https://doi.org/10.1007/BF03078156.