Stephen A. ButlerDr. Butler attained his PhD from the University of London and after a Post-Doctoral Fellowship at Yale University School of Medicine he became an Assistant Professor at the University of New Mexico with the USA hCG Reference Service. Steve returned t the UK and, following positions at Queen Mary University of London and London Metropolitan University he spent seven years at Middlesex University as Reader (Associate Professor) in Biomedical Diagnostics. Dr Butler has been a Director for medical diagnostics companies and and is now a consultant biomedical diagnostics expert with a particular interest in diagnostics and therapeutics relating to hCG in pregnancy and cancer. He has published over 80 peer reviewed scientific articles, reviews, letters, patents, abstracts and book chapters in the field of molecular diagnostics. He is a global opinion leader on the structure and function of human chorionic gonadotropin (hCG) and its role as a diagnostic marker in fertility, pregnancy and cancer. Read More Read Less