About the Authors

Liesbeth Hempenius

l.hempenius@umcg.nl

Affiliations University Center for Geriatric Medicine, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands, Geriatric Center, Medical Center Leeuwarden, Leeuwarden, the Netherlands

Joris P. J. Slaets

Affiliation University Center for Geriatric Medicine, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

Dieneke van Asselt

Affiliation Department of Geriatrics, Radboud University Medical Center, Nijmegen, the Netherlands

Truuske H. de Bock

Affiliation Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

Theo Wiggers

Affiliation Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

Barbara L. van Leeuwen

Affiliation Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BL TW TB JS. Performed the experiments: LH BL. Analyzed the data: LH TB. Wrote the paper: LH BL TW DA JS TB.