Erren Thomas Christoph, Groß Juliane Valérie, Shaw David Martin, Selle Barbara
Institute and Policlinic for Occupational Medicine, Environmental Medicine, and Prevention Research, University Hospital of Cologne, University of Cologne, Cologne, Germany.
Institute for Biomedical Ethics, University of Basel, Basel, Switzerland.
JAMA Intern Med. 2014 Apr;174(4):633-5. doi: 10.1001/jamainternmed.2013.14760.