By Harries RL   Cox A   Gomez KF   in Bulletin of The Royal College of Surgeons of England

ISSN:1478-7075|93|9|1-4

The Royal College of Surgeons of England‎(2011)‎

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By Harries RL   Bradshaw CA   Jones EA   Lewis P   in Journal of Perioperative Practice

ISSN:1750-4589|23|3|56-58

The Association for Perioperative Practice‎(2013)‎

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