Department of Rehabilitation Medicine, Erasmus MC, Rotterdam, The Netherlands. g.arends@erasmusmc.nl.
Department of Plastic, Reconstructive, and Hand Surgery, Erasmus MC, Room EE-1589, PO Box 2040, 3000 CA, Rotterdam, The Netherlands. g.arends@erasmusmc.nl.
Xpert Handtherapie, Utrecht, The Netherlands. g.arends@erasmusmc.nl.