https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0008-3
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0010-9
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0006-5
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0007-4
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-015-0002-9