title: [What we do not take as (sufficiently) true].
authors.affiliation: Abt. Gastroenterologie und Ernährung, Klinik für Tumorbiologie, Freiburg, Germany.
authors.forename: Jann
authors.initials: J
authors.lastname: Arends
authors.forename: Freerk T
authors.initials: FT
authors.lastname: Baumann
authors.forename: Hans
authors.initials: H
authors.lastname: Lampe
authors.forename: Anna
authors.initials: A
authors.lastname: Paul
mesh_terms: D019317:Evidence-Based Medicine; D005081:Exercise Therapy / Q000379:methods* / Q000706:statistics & numerical data*; D005858:Germany / Q000453:epidemiology; D006801:Humans; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology* / Q000517:prevention & control*; D009369:Neoplasms / Q000453:epidemiology / Q000534:rehabilitation*; D010809:Physical Fitness; D013177:Sports