Operationalizing multimorbidity and autonomy for health services research in aging populations - the OMAHA study oleh Schödel Nadine, Dietzel Roswitha, Kurzawe-Seitz Ina, Gaertner Beate, Hapke Ulfert, Knopf Hildtraud, Six-Merker Julia, Ernert Andrea, Busch Markus, Fuchs Judith, Holzhausen Martin, Welke Justus, Wiskott Juliane, Wetzstein Matthias, Martus Peter, Scheidt-Nave Christa