World Health Organization Expert Committee.Cancer Pain Relief and Palliative Care. Geneva, Switzerland: World Health Organization; 1990 . Technical Report Series 804.
2.
Bernard SA, Bruera E.Drug interactions in palliative care. J Clin Oncol.2000;18:1780-1799.
3.
Holmes HM, Hayley DC, Alexander GC, Sachs GAReconsidering medication appropriateness for patients late in life. Arch Intern Med.2006;166:605-609.
4.
Graves T., Hanlon JT, Schmader KE, et al. Adverse events after discontinuing medications in elderly outpatients . Arch Intern Med.1997;157:2205-2210.
5.
Campbell SM, Roland MO, Buetow SADefining quality of care. Soc Sci Med.2000 ;51:1611-1625.