https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-7-36
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-7-37
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-7-35
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-7-34