Feasibility of implementing a decision aid for advanced cancer patients in a comprehensive cancer centers' outpatient setting: valuable lessons learned - Laryionava, Katsiaryna; Boekels, Rebecca; Schildmann, Jan; Wensing, Michel; Wedding, Ulrich; Surmann, Bastian; Mehlis, Katja; Gebel, Cordula; Cinci, Marc L.; Krug, Katja; Winkler, Eva C. (Cancer medicine, 2024)