Funding for this research was provided by:
National Key Technology R&D Program of China (2014BAI04B05)
National Natural Science Foundation of China (81271127)
Received: 21 August 2017
Accepted: 25 June 2018
First Online: 2 July 2018
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of the First Affiliated Hospital of Xi’an Jiaotong University (XJTU1AF2015 LSK-159). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee, and the 1964 Helsinki declaration and its later amendments or comparable ethical standards. A written informed consent was obtained from all individual participants included in the study. For minor patients (< 16), the written consent form was obtained from the accompanying parents.
: A written consent form was obtained from all participants for potentially publishing their clinical data and images while protecting their personal information. For participants under the age of 16, we obtained the written consent form from their parents.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.