Text and Data Mining valid from 2020-04-01
Received: 24 February 2020
Accepted: 23 March 2020
First Online: 23 April 2020
Ethics approval and consent to participate
: All participants in this study provided written informed consent before sample collection. The research is in accordance with the ethical guidelines of the 1975 Declaration of Helsinki and was approved by the Ethics Committee of the First Affiliated Hospital of Zhejiang University (permit number: 2017–658-1).
: Not Applicable.
: The authors declare that they have no competing interests.