1. McGovern Center For Humanities & Ethics, University of Texas Health Science Center at Houston, Houston, Texas, USA
2. Department of Philosophy and Religion, American University, Washington, Washington DC, USA
3. Department of Psychiatry, Columbia University Medical Center, New York, New York, USA
4. Departments of Bioengineering, Electrical & Systems Engineering, Physics and Astronomy, Neurology, and Psychiatry, University of Pennsylvania; and the Santa Fe Institute, Philadelphia, Philadelphia, USA
5. National Institutes of Health, National Institute of Environmental Health Sciences, New York, New York, USA