Funding for this research was provided by:
National Natural Science Foundation of China (81302168)
National Clinic Key Construction Speciality (PTWK2016-CMGH)
Scientific Foundation of Chengdu Medical College (CYZ19-07)
Received: 31 December 2019
Accepted: 18 May 2020
First Online: 22 June 2020
Compliance with ethical standards
: The authors declare no competing interests.
: This study was performed in accordance with clinical study protocols and the principles of the Declaration of Helsinki (modified 2000) and was approved by the Research Care and Ethics Committee at our institution (No. SPPHCT2019–0901).
: Written informed consent was obtained from all patients or their relatives.