https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0144-4
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0155-9
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0154-x
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-016-0152-4
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0153-y