https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0367-4
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0370-9
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0366-5
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0369-2
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0371-8
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0374-5
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0365-6
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0372-7
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0368-3
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-018-0363-8