Received: 27 June 2019
Accepted: 3 September 2019
First Online: 29 September 2019
Ethics approval and consent to participate
: This research involving human data have been performed in accordance with the Declaration of Helsinki and have been approved by an appropriate ethics committee. Written, informed consent to participate was obtained from participants (or their parent or legal guardian in the case of children under 16).The name of the ethics committee: The Ethics Committee of Clinical Medicine Research, the First Affiliated Hospital of Anhui Medical University.The reference number: YJ2019-05-07.
: Written, informed consent was obtained for participants (or their legal guardian if they were under the age of 16), for the publication of identifying images or other personal or clinical details of participants that compromise anonymity.
: The authors declare that they have non-financial competing interests.