The phrase "a combination of professionals" is correct and usable in written English.
It can be used when referring to a group of different experts or specialists working together in a particular field or project.
Example: "The project was successful due to a combination of professionals from various disciplines, including engineering, design, and marketing."
Alternatives: "a team of experts" or "a group of specialists".
Some sites, like Fool.com, are largely aimed at small investors, and others, including TheStreet.com, seek a more sophisticated audience -- a combination of professionals and well-informed private investors.
They are a combination of professionals who have had experience with runaways and nonprofessionals who volunteered because of their concern for such children.
Both, the Stanford Chronic Disease Self-Management Progrande and the UK Expert Patient Programme are either peer-led or have a combination of professional and peer led sessions, whereas OPTIMAL is completely professionally led by occupational therapists with no peer leadership roles.
Some fire officials envision staffing more companies by a combination of professional and volunteer firefighters, or developing alternate ways of responding to fire emergencies.
He defended the enterprise agreement, explaining it was designed to increase firefighters in CFA stations with a combination of professional and volunteer firefighters.
A 350-page report concluded that the investigation into the killing had been "marred by a combination of professional incompetence, institutional racism and a failure of leadership".
It puts the best possible face on a show that turns brutal psychological combat into a combination of professional wrestling match and circus act.
My support structure has been a combination of professional support — people who are paid to help you — job coaches, counselors, doctors, nurses, that kind of thing.
Because both companies knew what it felt like to be the target of a takeover attempt, each resolved to treat any consolidation with another company as a combination of professional organizations instead of as a takeover or an acquisition.
