Text and Data Mining valid from 2019-06-15
Received: 9 March 2019
Accepted: 5 June 2019
First Online: 15 June 2019
Ethics approval and consent to participate
: The study is approved by the ethics committee of Tongji Medical College, Huazhong University of Science and Technology. Each author certifies that the investigation was conducted in conformity with ethical principles. Written informed consent to participate in the study was obtained from the patient or parent/guardian in case of child participant.
: Written informed consent for publication of images was obtained from the participants.
: The authors declare that they have no competing interests.