https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0125-7
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0127-5
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0128-4
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0126-6