Koolhaas, C. M., van Rooij, F. J., Schoufour, J. D., Cepeda, M., Tiemeier, H., Brage, S., & Franco, O. H. (2017). Objective measures of activity in the elderly: Distribution and associations with demographic and health factors. J Am Med Dir Assoc.

Koolhaas, Chantal M., Frank J.A van Rooij, Josje D. Schoufour, Magda Cepeda, Henning Tiemeier, Soren Brage, و Oscar H. Franco. "Objective Measures of Activity in the Elderly: Distribution and Associations With Demographic and Health Factors." J Am Med Dir Assoc 2017.

Koolhaas, Chantal M., et al. "Objective Measures of Activity in the Elderly: Distribution and Associations With Demographic and Health Factors." J Am Med Dir Assoc 2017.