1 Brighton and Sussex Medical School, Brighton, UK.
2 Geneva University Hospitals, Geneva, Switzerland.
3 Law School, University of Exeter, Exeter, UK.
4 Amref International University, Nairobi, Kenya.
5 Uehiro Centre for Practical Ethics, University of Oxford, Oxford, UK; Centre for Biomedical Ethics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597. Electronic address: [email protected].