https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0386-1
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0391-z
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0384-3
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0395-8
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0392-y
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0390-0
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0396-7
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0399-4
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0388-z
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0393-x
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0397-6
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0389-y
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0387-0
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0398-5