Palliative care is provided by many disciplines that will also contribute to the evidence in this and related areas. There are information and resources here that will help you to find evidence specific to allied health.
The following online databases can be used to find allied health evidence. Palliative care rehabilitation evidence can be found in several of these databases eg, CINAHL, PubMed, SCOPUS. The CareSearch links go specifically to the evidence in palliative care.