Other experts question whether fat is really on the way out of the American mind.

Many experts question whether China even needs to own more such energy assets.

Some experts on work and family life are already questioning the study's results.

Yet some experts question whether such methods actually work in the long term.

Some experts question whether the vessel is worth the price.

But experts question these findings - and suggest that getting the right treatment early may be key.

But many experts question whether doctors working within a system designed to save money can always act in their patients' best interests.

But some experts question whether the solution should be considered a proof at all.

But each new plant would cost billions, and some experts question whether they are necessary.

But some experts question the wisdom of the new emphasis.