Funding for this research was provided by:
National Natural Science Foundation of China (BJ-2011-058)
Received: 10 February 2019
Accepted: 4 September 2019
First Online: 26 September 2019
Ethics approval and consent to participate
: As this is a case report describing clinical observations, ethic approval was waived.
: The patient agreed and provided written informed consent for publication of this case report.
: The authors declared that they have no competing interests.