https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-11-75
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-11-76
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-11-78
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-11-77