Article History
Received: 5 April 2020
Accepted: 29 July 2020
First Online: 5 August 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Ethics Committee of The Science and Technology Commission of Shanghai Municipality, and was carried out in accordance with the Declaration of Helsinki. Written informed consent was obtained from all participants.
: Not applicable.
: No author has financial or other contractual agreements that might cause conflicts of interest.