William T. Blows RMN, RGN, RNT, OStJ, BSc (Hons), PhD, is Lecturer in Applied Biological Sciences at St Bartholomew School of Nursing and Midwifery, City University, London. He is the author of The Biological Basis of Nursing: Clinical Observations (2001) and The Biological Basis of Nursing: Mental Health (2002) also published by Routledge.