Funding for this research was provided by:
H2020 Marie Skłodowska-Curie Actions (676265)
FP7 Health (603111)
Schweizerische Akademie der Medizinischen Wissenschaften
Wetenschappelijk Fonds Willy Gepts of the UZ Brussel
Polish Ministry of Science and Higher Education
Received: 11 November 2020
Accepted: 25 February 2021
First Online: 7 March 2021
: Ethics approval were obtained from the relevant ethics committees in all countries. Belgium: Commissie Medische Ethiek UZBrussel, 27/05/2015; England: NHS – NRES Committee North West-Haydock, 10/09/2015; Finland: Terveyden jahyvinvoinnin laitos, Institutet för hälsa och välfärd, 30/6/2015; Italy: Comitato Etico, Universita Cattolica del Sacro Cuore, 6/11/2017; Netherlands: Medisch Ethische Toetsingscommissie VUMedisch Centrum, 2/7/2015; Poland: Komisja Bioetycza, Uniwersytetu Jagiellonskiego, 25/6/2015; Switzerland: Commission cantonaled’éthique de la recherché scientifique de Genève (CCER), 6/8/2015. In accordance with national laws and guidelines, each partner involved in data collection developed a protocol for researchers in case adverse events occur in a participating nursing home. No adverse events were reported by researchers during the trial. All respondents gave prior informed consent in writing. In Poland and the Netherlands, informed consent was not required by the ethics committees based on the conditions for consent in both countries, as the questionnaires were filled in anonymously by the respondents.
: Not applicable.
: The authors declare that there is no conflict of interest.