Verbeek Hilde, Zwakhalen Sandra M G, Schols Jos M G A, Hamers Jan P H
Department of Health Services Research, CAPHRI School for Public Health and Primary Care, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
J Am Med Dir Assoc. 2013 Dec;14(12):855-7. doi: 10.1016/j.jamda.2013.09.006. Epub 2013 Oct 24.