Development and utilization of a smartphone app for data collection and monitoring in the context of a home-based multimodal nutrition and physical exercise intervention study with advanced tumour patients. (April 2023) - Gafner, L.; Rühlin, M.; Joos, A.; Schmocker, M.; Meier, D.; Imoberdorf, R.; Pless, M.; Ballmer, P.E.; Storck, L.J.