Postnatal mental health, breastfeeding beliefs, and breastfeeding practices in rural China.

"Declarations Ethics approval and consent to participateThis study received ethical approval from the Stanford University Institutional Review Board (Protocol # 44312). All participants provided oral consent for participation in this study. Individuals found to have severe mental health problems were referred to the local hospital for diagnosis and treatment. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This research was supported by unrestricted gifts by anonymous donors. Funding sources played no role in the design of the study, data collection, analysis, or interpretation, or in writing the manuscript."