Text and Data Mining valid from 2019-01-09
Received: 30 June 2018
Accepted: 30 October 2018
First Online: 9 January 2019
Compliance with ethical standards
: All procedures performed in studies involving human participants were approved by the Institutional Review Board of Shanghai Jiao Tong University-affiliated Ren Ji Hospital and with the principles of the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. This article does not describe any studies with animals performed by any of the authors.
: Informed consent was waived for the study.