About the Authors

Anton J. M de Craen

To whom correspondence should be addressed. E-mail: craen@lumc.nl

Affiliation

Jacobijn Gussekloo

Affiliation

Gerard J Blauw

Affiliation

Charles G Willems

Affiliation

Rudi G. J Westendorp

Affiliation

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

AJMdC, JG, CGW, and RGJW conceived and designed the experiments. JG and GJB performed the experiments. AJMdC, JG, GJB, and CGW enrolled the patients. AJMdC and RGJW analysed the data. CGW was responsible for overseeing the Institute for Rehabilitation Research (iRv) occupational therapists. All authors contributed to the writing of the paper.