She provided exactly the kind of professional expertise we required, particularly as I had no training in linguistics.

He was a patient now, a disturbed young man who needed her professional expertise.

As many of you know, Alex was an asset to this program in ways well beyond his professional expertise.

Their weakness is a political failing, not one of professional expertise.

Many people who are admired for their career success and professional expertise feel a failure.

To help staff develop their own professional expertise and competence.

"Don't teachers have the same level of professional expertise as doctors and lawyers?"

This came within the field of her professional expertise, after all.

"And all I need from you is your professional expertise."

Wouldn't it be nice if people restricted their opinions to those areas in which they had professional expertise?