https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-44
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-43
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-45