Xiang, Mi
Zhang, Jing
Liang, Huigang http://orcid.org/0000-0001-6597-4461
Zhang, Zhiruo
Konishi, Masayuki
Hu, Huanhuan
Nishimaki, Mio
Kim, Hyeon-Ki
Tabata, Hiroki
Shimizu, Hisao
Arao, Takashi
Sakamoto, Shizuo
Article History
Received: 3 June 2018
Accepted: 7 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: This study was approved by the committee on research involving human subjects of Waseda University (2014–037). The Ethics Committee of the Maternal and Child Health Hospital in Chengdu Wuhou in China ruled that no formal ethics approval was required in this particular case. All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.