https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0244-6
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https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0248-2
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0236-6
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0243-7
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0234-8
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0237-5
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0242-8
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0238-4
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0250-8
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0241-9
https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-017-0249-1