Text and Data Mining valid from 2019-11-15
Received: 29 November 2018
Accepted: 25 October 2019
First Online: 15 November 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Huashan Hospital. The participant consent was written and was performed in accordance with the ethical standards of the Declaration of Helsinki of 1964.
: Not Applicable.
: The authors declare that they have no competing interests.