Somphos Vicheth Som

The authors have declared no competing interest. This research was funded by the UK Biotechnology and Biological Sciences Research Council (BBSRC) Global Challenges Research Fund (B/T008989/10). The funders had no involvement in study design, data analysis or interpretation or decision to submit the paper for publication.

The authors have declared no competing interest. This work was undertaken as part of the project entitled Addressing micronutrient deficiencies associated with the double burden of childhood malnutrition in China, a combined food system framework, which funded by UK Biotechnology and Biological Sciences Research Council (BBSRC) (Grant number: BB/T008989/1). I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.