Funding for this research was provided by:
Wenzhou Municipal Science and Technology Bureau (2019KXCX-HN06)
Received: 29 October 2019
Accepted: 20 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: This study was approved by the IRB (Institutional Review Board) of the Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, and the informed consent was signed by all volunteers.
: We have obtained consent to publish from the participants.
: The authors declare that they have no competing interests.