Peter H. Abrahams, MBBS, FRCS(ED), FRCR, DO(Hon), FHEA, Professor Emeritus of Clinical Anatomy, Institute of Clinical Education, Warwick Medical School, University of Warwick, Coventry, United Kingdom, Jonathan D. Spratt, MA (Cantab), FRCS (Eng), FRCR, Clinical Director of Radiology, City Hospitals Sunderland, UK., Marios Loukas, MD, PhD, Dean of Basic Sciences, Dean of Research, Professor and Co-chair, Department of Anatomical Sciences, School of Medicine, St.George's University, Grenada WI, Albert-Neels van Schoor, BSc MedSci, BSc (Hons), MSc, PhD, Associate Professor, Head of Section of Clinical Anatomy, Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, Gauteng, South Africa and Ralph T. Hutchings, Photographer and Contributor to www.VisualsUnlimited.com; Formerly Chief Medical Laboratory Scientific Officer, Royal College of Surgeons of England, London, UK