Received: 18 September 2019
Accepted: 5 November 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethical Committee of Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University. As a de-identified secondary data analysis, patients’ consent was waived by the Ethical Committee.
: The corresponding author and all the authors have read and approved the final submitted manuscript, and agreed to conditions noted on the Author Disclosure Form. No portion of the work has been or is currently under consideration for publication elsewhere. No portion of the manuscript has been published or posted on the Internet.
: The authors declare that they have no competing interests.