Dr Hashim Hashim is a Consultant Urological Surgeon and Director of the Urodynamics unit, Bristol Urological Institute, and an Honorary Senior Lecturer at the University of Bristol. He is a Fellow of the Royal College of Surgeons of England and Fellow of the European Board of Urology and his main research interests include the overactive bladder, urinary incontinence, nocturia, urodynamics and benign prostates. Paul Abrams is Consultant Urological Surgeon, North Bristol Trust, Professor of Urology, University of Bristol, Head of Teaching and Research at the Bristol Urological Institute, Chairman of the International Consultation for Urological Diseases. He is also one of the world's leading experts in the field of lower urinary tract dysfunction. His clinical special interests are Female and functional urology and Neurourology and Urodynamics.