Nijhuis, Wouter http://orcid.org/0000-0001-6683-7549
Franken, Anton
Ayers, Kara
Damas, Chantal
Folkestad, Lars
Forlino, Antonella
Fraschini, Paolo
Hill, Claire
Janus, Guus
Kruse, Richard
Lande Wekre, Lena
Michiels, Lieve
Montpetit, Kathleen
Panzeri, Leonardo
Porquet-Bordes, Valerie
Rauch, Frank
Sakkers, Ralph
Salles, Jean-Pierre
Semler, Oliver
Sun, Jony
To, Michael
Tosi, Laura
Yao, Yangyang
Yeung, Eric Hiu Kwong
Zhytnik, Lidiia
Zillikens, Maria Carola
Verhoef, Marjolein
Article History
Received: 3 July 2020
Accepted: 6 January 2021
First Online: 20 March 2021
Ethics approval and consent to participate
: For some countries ethical approval was necessary; Belgium, The Netherlands, United Kingdom and The United States. In all of the other participating countries, a review was conducted and no ethical approval was required.
: Not applicable.
: The authors declare that they have no competing interests.