Effect of an interprofessional care concept on the hospitalization of nursing home residents: study protocol for a cluster-randomized controlled trial oleh Alexandra Piotrowski, Martha Meyer, Iris Burkholder, Dagmar Renaud, Markus Alexander Müller, Thorsten Lehr, Sonja Laag, Joachim Meiser, Lisa Manderscheid, Juliane Köberlein-Neu