by Zaal‐Schuller, I. H., Willems, D. I., Ewals, F., Goudoever, J. B., Vos, M. A.
Published in Journal of intellectual disability research (01.04.2018)

by Willems, D L, Hak, A, Visser, F, Van der Wal, G
Published in Palliative medicine (01.09.2004)