11.   Ascher said it is a sensible compromise to an ethical problem not explored by any other medical center.

12.   As long as we have ethical challenges and ethical problems we have to deal with them.

13.   Bioethics is the study of ethical problems arising from scientific advances, especially in biology and medicine.

14.   All this is possible, says Time managing editor Walter Isaacson, but are there ethical problems?

15.   But his seat on the banking committee is fraught with ethical problems and a questionable choice.

16.   But it would have left unaddressed the ethical problem of whose beliefs to accommodate in the workplace.

17.   But owning a stake in a company you represent creates ethical problems.

18.   But theoretically, gifts from patients may cause ethical problems by creating a sense of obligation and hence potential conflicts of interest.

19.   But using it to shape behavior in higher animals would cause ethical problems, said Chapin.

20.   Co-workers said Walker had turned down more than a few lucrative assignments because he saw conflicts of interest or other ethical problems with the work.