1. Senior Research Fellow, Asia Research Institute, National University of Singapore. This research was supported by the National Medical Research Council under the Funding Initiatives of the National Research Fund, Singapore. Many thanks to Dr Karen Maschke of the Hastings Centre for her mentorship, and to Professor Alastair Campbell and Dr Benjamin Capps at the Centre for Biomedical Ethics, National University of Singapore, for their valuable insights. All websites accessed 27 February 2013.