concern about something
concern over something
concern with something
concern for something

As to what editors make, that needn't concern you for some time.

I'm absolutely fine but it was very concerning for everyone.

"The question concerned the cost, not a request for an opinion."

And that should be concerning for any potential customer of their phones.

There is something that has been concerning me for some time now.

The second implication of the study concerns Federal standards for exposure.

My second comment concerns our support for the reconstruction in Iraq.

My first point concerns the reliability of the final annual accounts for 2006.

However, this amendment actually concerned the paragraph on the proposal for a decision.

He needn't have concerned himself; his treatment of her left little cause for complaint.