https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-12-3
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-12-1
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-12-2