https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-32 https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-27 https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-31 https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-29 https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-30 https://bmcnurs.biomedcentral.com/articles/10.1186/1472-6955-13-28