https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0017-2
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0020-7
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0019-0