SHIP-AGE: Frailty, renal function, and multi-component primary care in rural Mecklenburg-West Pomerania (MV-FIT)- study protocol - Maik Gollasch; Yulia Komleva; Dmitry Tsvetkov; Felix Morof; Mladen V. Tzvetkov; Till Ittermann; Marcus Vollmer; Uta Zahn-Tesch; Holger Kock; Franziska Schuster; Neeltje van den Berg; Henry Völzke; et al. (PLoS ONE, 2025)