Text and Data Mining valid from 2019-11-18
Received: 23 July 2019
Accepted: 30 October 2019
First Online: 18 November 2019
Ethics approval and consent to participate
: This study obtained approval from the institutional review board of Peking University People’s Hospital.
: Written informed consent was obtained from the patient and legal guardian for publication of these case reports.
: The authors declare that they have no competing interests.