Achterberg WP, Gambassi G, Finne-Soveri H, Liperoti R, Noro A, Frijters DHM, Cherubini A, Dell'Aquila G, Ribbe MW.  2010.  Pain in European long-term care facilities: cross-national study in Finland, Italy and The Netherlands. Pain. 148(1):70-74.

Boorsma M, van Hout HPJ, Frijters DH, Ribbe MW, Nijpels G.  2008.  The cost-effectiveness of a new disease management model for frail elderly living in homes for the elderly, design of a cluster randomized controlled clinical trial. BMC Health Services Research. 8(1):143.

Meerman MBoorsma, van Hout HPJ, Frijters DHM, Ribbe MW, Nijpels G.  2011.  The cost effectiveness of a multidisciplinary care model for elderly living in Dutch residential care homes, design of a cluster randomized trial. NEW IN OLD. :55.

van Dijk PTM, Mehr DR, Ooms ME, Madsen R, Petroski G, Frijters DH, Pot AMargriet, Ribbe MW.  2005.  Comorbidity and 1-year mortality risks in nursing home residents. Journal of the American Geriatrics Society. 53(4):660-5.