By Leff D.   Kaura T.   Agarwal T.   Davies S.   Howard J.   Chang A.   in Surgical Endoscopy

ISSN:0930-2794|21|7|1117-1121

Springer Publishing Company ‎(2007)‎

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By Orihuela-Espina F   Leff D R   James D R C   Darzi A W   Yang G Z   in Physics in Medicine and Biology

ISSN:0031-9155|55|13|3701-3724

IOP Publishing‎(2010)‎

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