"ethical controversy" is correct and usable in written English.
You can use it to refer to a disagreement or debate about whether something is ethical. For example: "The use of performance-enhancing drugs in sports has long been the subject of ethical controversy."
The combination of plenary lectures by internationally-renowned experts and small group discussions led by an expert facilitators cover core information about ethical theories, principles, and methods, evolving standards for ethics consultation, and areas of clinical ethical controversy and consensus.
The deal was very controversial --and equally importont to Boeing -- even before the ethical controversy erupted.
The use of randomized consent designs has been subject of methodologic and ethical controversy.
The neural stem cells are not free of ethical controversy, since they generally come from fetuses.
However, ablative brain surgery was stopped in China in 2004 due to the related ethical controversy and possible side effects.
Next, I use three examples of ethical controversy in marketing to illustrate the decline of caveat emptor.
This course examines basic ethical controversies in public life.
Mention stem cells, and many people think of divisive ethical controversies and heated political debates.
How can professional organizations, like the APA and the American Medical Association, best respond to ethical controversies of this kind?
However, human ESCs are surrounded by a number of ethical controversies, the extent of which is partly dependent on their source.
I hope that all the years of ethical controversies that doctors must deliberate render the female (and male) segment of medical students scornful of this field.
