https://cjkhd.biomedcentral.com/articles/10.1186/s40697-016-0118-5
https://cjkhd.biomedcentral.com/articles/10.1186/s40697-016-0120-y
https://cjkhd.biomedcentral.com/articles/10.1186/s40697-016-0121-x
https://cjkhd.biomedcentral.com/articles/10.1186/s40697-016-0119-4