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APA Citation
Catling, J. A., Pinto, D. M., Jordan, C., & Jones, J. G. (1980). respiratory effects of analgesia after cholecystectomy: comparison of continuous and intermittent papaveretum.. BMJ, 281(6238), 478–480. http://access.bl.uk/ark:/81055/vdc_100142297854.0x00003c