Markus Wolfensberger is Emeritus Professor of Otorhinolaryngology and Doctor of medical ethics. He has held positions as Head of the Department of Otorhinolaryngology and Director of the Head and Neck Tumour Centre at Basel University Hospital, Switzerland.Anthony Wrigley is Professor of Ethics at the University of Keele, U.K. He specialises in bioethics and applied ethics. Much of his work focuses on ethical and policy issues on the margins of life (beginnings and ends) and the analysis of concepts used in bioethical debate, such as vulnerability, hope, and trust.