[1] Stanford Univ, Sch Med, Stanford, CA 94305 USA
[2] Stanford Ctr Biomed Eth, Res Eth Legal & Social Implicat Genet & Genom, Stanford, CA 94305 USA
[3] Joint UC Berkeley UCSF Med Anthropol Program, Berkeley, CA USA
[4] Stanford Univ, Med & Biomed Eth, Stanford, CA 94305 USA
[5] Stanford Univ, Pediat & Med, Stanford Ctr Biomed Eth, Stanford, CA 94305 USA