https://ann-clinmicrob.biomedcentral.com/articles/10.1186/s12941-016-0119-3 https://ann-clinmicrob.biomedcentral.com/articles/10.1186/s12941-015-0109-x https://ann-clinmicrob.biomedcentral.com/articles/10.1186/s12941-015-0115-z https://ann-clinmicrob.biomedcentral.com/articles/10.1186/s12941-016-0121-9