[1] Stanford Univ, Ctr Biomed Eth, Palo Alto, CA 94304 USA
[2] Stanford Univ, Dept Radiol, Palo Alto, CA 94304 USA
[3] Stanford Univ, Program Neurosci, Palo Alto, CA 94304 USA
[4] Stanford Univ, Dept Pediat, Palo Alto, CA 94304 USA
[5] Natl Inst Neurol Disorders & Stroke, NIH, Bethesda, MD 20892 USA
[6] Natl Inst Drug Abuse, NIH, Bethesda, MD 20892 USA
[7] NIMH, NIH, Bethesda, MD 20892 USA
[8] Cleveland Clin Fdn, Dept Bioeth, Cleveland, OH 44195 USA
[9] Johns Hopkins Hosp & Hlth Syst, Legal Dept, Washington, DC 20005 USA
[10] Albert Einstein Coll Med, Dept Bioeth, Bronx, NY 10461 USA
[11] Michigan Head & Spine Inst, Southfield, MI 48075 USA
[12] Univ Minnesota, Sch Law, Minneapolis, MN 55455 USA
[13] Univ Minnesota, Sch Med, Minneapolis, MN 55455 USA
[14] Univ Minnesota, Ctr Bioeth, Minneapolis, MN 55455 USA