Funding for this research was provided by:
the Chinese Academy of Medical Sciences innovation fund for medical sciences (2016-I2M-3-004)
Received: 22 July 2019
Accepted: 27 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: Written informed consent was obtained from the proband and his family and the study was conducted in accordance with the Declaration of Helsinki. The study protocol was approved by the Ethics Committee of Peking Union Medical College Hospital.
: Written Consent for publication of the patient’s, the parents’ and the grandparents’ clinical details and/or clinical images was obtained from the parents of the proband and the grandparents of the patient.
: The authors declare that they have no conflict of interest.