https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-34
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-36
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-33
https://bmcmedinformdecismak.biomedcentral.com/articles/10.1186/1472-6947-9-35