Substantial Impairment of Quality of Life during COVID-19 Pandemic in Patients with Advanced Rectal Cancer - Dennison, Irene; Schweizer, Claudia; Fitz, Tim; Blasko, Daniel; Sörgel, Christopher; Kallies, Annett; Schmidt, Linda; Fietkau, Rainer; Distel, Luitpold Valentin (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2022)