Text and Data Mining valid from 2019-07-12
Received: 18 January 2019
Accepted: 30 June 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: This study is followed with all criteria adhered to the Declaration of Helsinki. Ethics board approval and consent was obtained for this work from the Ethics Committee at the Children’s Hospital of Fudan University, Shanghai, China (ekyy-2016-23).
: All people including the patient’s parents in two families and their grandparents in family 1 gave a written consent for publication on a local form approved by the Medical Ethics Committee of our institution.
: The authors declare that they have no competing interests.