Ethical approval
The trial was approved by three Institutional Review Boards: (1) Local IRB: LMRF, Sir Gangadharrao Chitnavis Trust and (2) Indian National IRB: Indian Council of Medical Research, and (3) University of Sydney Human Research Ethics Committee (Ref: 2015/990). A written signed informed consent was requested from each study participant in the presence of a witness prior to any data collection. Also, at the time of infant dietary data collection, the infant's primary guardian, i.e. infant's mother or caregiver gave a written informed consent for the infant's participation in this study. A copy of this consent was also given to the respondent or caregiver. Trial Registration Number: CTRI/2018/02/011915.