One committee, bad. . .

Richard Nicholson (바카라 사이트 추천S, September 13) complained that 바카라사이트 Nuffield Council on Bioethics report Animal-to-human transplants: 바카라사이트 ethics of xenotransplantation did not suggest "how successful animal studies needed to be before starting human trials".

The report proposed an advisory committee on xenotransplantation that would approve any trials involving human recipients and 바카라사이트 centres that may undertake such trials. The report went on to state: "No xenotransplantation trials involving human recipients should proceed until 바카라사이트 proposed committee [. . .] is in place [. . .]."

To 바카라사이트 best of my knowledge no one in this country has suggested that 바카라사이트 assessment of 바카라사이트 animal trials should be left to 바카라사이트 research ethics committee of a single institution.

DAVID SHAPIRO Executive secretary Nuffield Council on Bioethics