Funding for this research was provided by:
National Natural Science Foundation of China (81770571, 81970452, 81774152)
Guangzhou Science and Technology Plan Projects (201803040019)
Guangdong Province “Pearl River Talent Plan” Innovation and Entrepreneurship Team Project (2019ZT08Y464)
National Key Clinical Discipline of China
Received: 20 May 2020
Accepted: 27 May 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: Our study was approved by the institutional review boards of the Sun Yat-sen University and the participating hospitals. The informed consent was waived because this chart review did not involve any patient tissue or interview.
: Not applicable.
: All authors declare no competing interests.