Faden Ruth R, Dawson Liza, Bateman-House Alison S, Agnew Dawn Mueller, Bok Hilary, Brock Dan W, Chakravarti Aravinda, Gao Xiao-Jiang, Greene Mark, Hansen John A, King Patricia A, O'Brien Stephen J, Sachs David H, Schill Kathryn E, Siegel Andrew, Solter Davor, Suter Sonia M, Verfaillie Catherine M, Walters LeRoy B, Gearhart John D
Phoebe R. Berman Bioethics Institute, Johns Hopkins University, USA.
Hastings Cent Rep. 2003 Nov-Dec;33(6):13-27.