Li, Lei
Zhong, Wenwen
Kong, Hangru
Sun, Jianping
Zhang, Xiaofen
Su, Yanwen
Funding for this research was provided by:
Fondation Nestlé
Article History
First Online: 25 October 2018
Compliance with Ethical Standards
:
: The authors declare no conflict of interest.
: This research involved human subjects. All procedures performed in studies involving human participants were in accordance with the ethical standards of Institutional Review Committee of Public Health School of Xiamen University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. And written consent was obtained from all participants.