Straßner, Cornelia ; Frick, Eckhard ; Stotz-Ingenlath, Gabriele ; Buhlinger-Göpfarth, Nicola ; Szecsenyi, Joachim ; Krisam, Johannes ; Schalhorn, Friederike ; Valentini, Jan ; Stolz, Regina ; Joos, Stefanie (2019) Holistic care program for elderly patients to integrate spiritual needs, social activity, and self-care into disease management in primary care (HoPES3): study protocol for a cluster-randomized trial. Trials, 20 (364). pp. 1-11. ISSN 1468-6694