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Websites:

LASA website: www.lasa-vu.nl/themes/physical/functionele_beperkingen.html

Nationaal Kompas Volksgezondheid: www.nationaalkompas.nl/gezondheid-en-ziekte/functioneren-en-kwaliteit-van-leven/lichamelijk-functioneren/

SPPB website: www.grc.nia.nih.gov:///branches/ledb/sppb/index.htm

Statline CBS: http://statline.cbs.nl