About the Authors

Geoffrey P Lomax

To whom correspondence should be addressed. E-mail: glomax@cirm.ca.gov

Zach W Hall
Bernard Lo

Competing Interests

BL chairs the Stem Cell Research Oversight Committee at the University of California San Francisco.

Author Contributions

GPL, ZWH, and BL wrote the paper. ZWH participated extensively in the formulation of the recent medical and ethical standards for stem cell research adopted by the California Institute for Regenerative Medicine. BL contributed substantially to design and conception of the analysis.