1. Chen Su Lan Centennial Professor of Medical Ethics, National University of Singapore.. This article is a revised, expanded and updated version of a chapter originally published as ‘The Ethical Challenges of Biobanks: Safeguarding Altruism and Trust' in Sheila AM McLean (ed), First Do No Harm: Law, Ethics and Healthcare (Ashgate, Aldershot 2006). My grateful thanks to Adrienne Hunt, Secretary of the UK Biobank Ethics and Governance Council, for initial research work, and to Dr Sue Gibbons, University of...