https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0225-z
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0226-y
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0222-2
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0227-x
https://bmcendocrdisord.biomedcentral.com/articles/10.1186/s12902-017-0223-1