[1] Univ Groningen, Univ Med Ctr Groningen, Dept Hlth Psychol, Hanzepl 1, NL-9713 GZ Groningen, Netherlands
[2] Univ Groningen, Univ Med Ctr Groningen, Dept Med Oncol, Hanzepl 1, NL-9713 GZ Groningen, Netherlands
[3] Patyna Elderly Care, Dept Psychol, Harste 15, NL-8602 JX Sneek, Netherlands