Funding for this research was provided by:
National Natural Science Foundation of China (81470956, 81500543)
Article History
Received: 16 February 2019
Accepted: 3 July 2019
First Online: 22 July 2019
Ethics approval and consent to participate
: Not applicable.
: Written informed consent for publication was obtained from the patient and a copy of the written consent is available upon request.
: The authors declare that they have no competing interests.