Patient safety, cost-effectiveness, and quality of life: reduction of delirium risk and postoperative cognitive dysfunction after elective procedures in older adults—study protocol... oleh Alba Sánchez, Christine Thomas, Friederike Deeken, Sören Wagner, Stefan Klöppel, Felix Kentischer, Christine A. F. von Arnim, Michael Denkinger, Lars O. Conzelmann, Janine Biermann-Stallwitz, Stefanie Joos, Heidrun Sturm, Brigitte Metz, Ramona Auer, Yoanna Skrobik, Gerhard W. Eschweiler, Michael A. Rapp, PAWEL Study group