Published on in Vol 23 , No 1 (2021) :January
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17655, first published
.

1 Icare JGZ, Meppel, NL
2 Chairgroup Consumption & Healthy Lifestyles, Wageningen University, Wageningen, NL
3 GGD NOG, Warnsveld, NL