Received: 6 March 2019
Accepted: 30 August 2019
First Online: 10 October 2019
Ethics approval and consent to participate
: The Ethics Committee of FNRI approved the survey protocol. All surveyed households provided informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests. Y.S and L.D. are employees of Nestec S.A., Switzerland. The opinions expressed in the article are those of the authors alone and do not necessarily reflect the views or recommendations of their affiliations.