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Questionnaire choice affects the prevalence of recommended physical activity: an online survey comparing four measuring instruments within the same sample [journal article]
Source: BMC Public Health, 21 (2021). p.1-12
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Author(s): Stassen, Gerrit; Rudolf, Kevin; Gernert, Madeleine; Thiel, Ansgar; Schaller, Andrea
Source: BMC Public Health, 21 (2021). p.1-12