Adelphi Values, Patient-Centered Outcomes, Adelphi Values, Patient-Centered Outcomes, University of Southampton, Martin Luther University of Halle-Wittenberg - Institute of Health & Nursing Science, University Hospital Regensburg - Center for Clinical Studies, Netherlands Comprehensive Cancer Organisation, University of Leeds, Istituto Nazionale Tumori - IRCCS Fondazione G. Pascale, Andrzej Frycz Modrzewski Kracow University, Netherlands Cancer Institute - Division of Psychosocial Research and Epidemiology, Adelphi Values, Patient-Centered Outcomes, Adelphi Values, Patient-Centered Outcomes, Swansea University, Adelphi Values, Patient-Centered Outcomes, University of Copenhagen, Faculty of Health and Medical Sciences, Department of Public Health, Adelphi Values, Patient-Centered Outcomes, University of Sussex - Brighton and Sussex Medical School and European Organisation for Research and Treatment of Cancer (EORTC)