Funding for this research was provided by:
National Natural Science Foundation of China (81570501, 81770554, 81772607, 81472311)
Received: 20 March 2019
Accepted: 17 July 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: Not applicable.
: Written and signed consent for publication has been obtained from the patients involved in the case series.
: The authors declare that they have no competing interests.