Baller M, Boorsma M, Frijters DHM, van Marwijk HWJ, Nijpels G, van Hout HPJ.  2010.  Depression in Dutch homes for the elderly: under?diagnosis in demented residents? International journal of geriatric psychiatry. 25(7):712-718.

Boorsma M, Frijters DHM, Knol DL, Ribbe ME, Nijpels G, van Hout HPJ.  2011.  Effects of multidisciplinary integrated care on quality of care in residential care facilities for elderly people: a cluster randomized trial. Canadian Medical Association Journal. 

Boorsma M, Joling K, Frijters D, Ribbe M, Nijpels G, van Hout H.  2011.  The prevalence, incidence and associated risk factors for delirium in Dutch nursing homes and residential care homes. NEW IN OLD. :102.

Boorsma M, Langedijk E, Frijters DHM, Nijpels G, Elfring T, van Hout HPJ.  2011.  Implementation of Geriatric Assessment and Decision Support as part of a Multidisciplinary Integrated Care Model in Residential Care Homes. NEW IN OLD. :76.

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.

Lette M, Stoop A, Nijpels G, Baan C, de Bruin S, van Hout H.  2022.  Safety risks among frail older people living at home in the Netherlands - A cross-sectional study in a routine primary care sample. Health & social care in the community. 30(2):e469-e477.

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 Hout HPJ, Nijpels G, van Marwijk HWJ, Jansen APD, Veer PJVan't, Tybout W, Stalman WAB.  2005.  Design and pilot results of a single blind randomized controlled trial of systematic demand-led home visits by nurses to frail elderly persons in primary care [ISRCTN05358495]. BMC geriatrics. 5