Received: 31 January 2020
Accepted: 10 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: All genomic DNA from patients and controls were examined after obtaining informed consent. Experimental protocols were approved by the institutional review board of Yokohama City University under the number A19080001. Our research conformed to the principles of the Helsinki Declaration.
: We have obtained written informed consent for publication of clinical details of the patients.
: The authors declare that they have no competing interests.