Funding for this research was provided by:
National Institute of Child Health and Human Development (SC2HD076044)
Article History
First Online: 11 July 2016
Compliance with Ethical Standards
:
: This study was supported by the Eunice Kennedy Shriver National Institute Of Child Health & Human Development of the National Institutes of Health to the first author under Award Number SC2HD076044. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
: Yu Gao, Yonglin Huang, and Xiaobo Li declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.