Received: 2 February 2021
Accepted: 2 June 2021
First Online: 21 June 2021
: All the experiment protocol for involving humans was in accordance to guidelines of national, international, institutional, and Declaration of Helsinki in the manuscript. Both studies were approved by the Ethics Committee of the Hainan Branch of the Chinese People’s Liberation Army General Hospital before the project started (301hn11201601) and all participants provided written informed consent. Data were anonymized and de-identifiable with no personal information, with careful protection on confidentiality.
: Not applicable.
: The authors declare that they have no competing interests.