https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-61
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-59
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-60
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-6-58