@article{article834c150b,
title   = {The cognitive effects of opioids in cancer: a systematic review},
author = {Kurita, Geana Paula and Lundorff, Lena and Pimenta, Cibele Andrucioli de Mattos and Sjogren, Per},
year = {2009},
doi = {10.1007/s00520-008-0497-y},
journal   = {Supportive Care in Cancer}
}