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APA Citation
Jakobsen, G., Engstrøm, M., Fayers, P., Hjermstad, M. J., Kaasa, S., Kloke, M., Sabatowski, R., & Klepstad, P. (2019). sleep quality with WHO Step III opioid use for cancer pain. BMJ supportive & palliative care, 9(3), 307–315. http://access.bl.uk/ark:/81055/vdc_100135177458.0x000009