Li, Juan
Ji, Wenjing
Gao, Kankan
Zhou, Haijian
Zhang, Lihua
Mu, Xiaoping
Yuan, Chunlei
Guan, Xiaoshan
Deng, Qiulian
Zhang, Lian
Zhong, Huamin
Gao, Xiurong
Gao, Fei
Long, Yan
Chang, Chien-Yi
McIver, David J.
Liu, Haiying https://orcid.org/0000-0001-5680-3492
Funding for this research was provided by:
Health and Family Planning Commission of Guangzhou Municipality (20151A010034)
Guangzhou Science Technology and Innovation Commission (201804010447)
Article History
Received: 23 May 2018
Accepted: 30 August 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: This study was approved by the ethical committees of Guangzhou Women and Children’s Medical Center (reference number 2017021915), and written informed consents were obtained from parents or guardians of all infants enrolled by the care providers.
: Not applicable.
: We declare that we have no conflicts of interest. David J McIver (DJM) works at Metabiota Inc., Nanaimo, Canada. This does not alter our adherence to the journal policies on sharing data and materials. Metabiota Inc. provided in-kind support in the form of participation of author [DJM], but did not have any additional role in the study design, data collection and analysis, or decision to publish. No conflict of interest exists in the submission of this article.I declare on behalf of all my co-authors that the article has not been published, and is not under consideration for publication elsewhere. All the listed authors have approved the enclosed manuscript.