For longitudinal assessment of quality of life after treatment, the investigators will use nationally and internationally used, validated and recommended questionnaires: European Organization for Research and Treatment of Cancer (EORTC) QLQ-C15-PAL and EORTC QLQ-BM22. In addition, the EQ-5D (5 dimension) questionnaire will be conducted. The EORTC is currently developing a utility scoring instrument for the EORTC QLQ-C30 (from which the QLQ-C15-PAL originates). The investigators expect this scoring instrument will also be applicable for the QLQ-C15-PAL. After validation of this scoring instrument has taken place, the investigators plan to apply it to the data. This would make the addition of the EQ-5D questionnaire redundant and it will then be withdrawn.