https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-19
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-20
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-21
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-18