Received: 13 November 2020
Accepted: 9 March 2021
First Online: 30 March 2021
: The work described has been carried out in accordance with The Code of Ethics of the World Medical Association (Declaration of Helsinki) for experiments involving humans. The project was approved by the West China hospital ethics committee. All the participants signed an informed consent to participate in this study and a consent for the publication of the anonymized data has also been obtained.
: Not applicable.
: The authors declare that they have no competing interests.