University of Pennsylvania professor Arthur Caplan is bioethicist -- an expert in ethical and moral issues of biological medicine and technology.

VOA: special.2010.07.20

Arthur Caplan, the University of Pennsylvania bioethicist, says Merck had the right to cancel the study.

FORBES: Is Merck Flying Blind?

Baruch Brody, a bioethicist at Baylor College of Medicine in Houston, is among them.

ECONOMIST: Trial and error

"Just because they charge a fee and behave exclusively does not make them good, " warns bioethicist Art Caplan.

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