Received: 1 February 2021
Accepted: 10 May 2021
First Online: 24 May 2021
: This study protocol was approved by the ethical committee at Soochow University in China and Tulane University in the United States, as well as ethical committees at the 7 participating hospitals, in compliance with the Declaration of Helsinki. All participants provided written informed consent.
: Not applicable.
: The authors declared they do not have anything to disclose regarding conflict of interest with respect to this manuscript.