Published on in Vol 7, No 7 (2019): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12666, first published
.
1 Philips Research, Family Care Solutions, Eindhoven, Netherlands
2 Philips Consumer Lifestyle, Mother & Childcare, Eindhoven, Netherlands
*all authors contributed equally