The phrase "authorities in the fields of" is correct and usable in written English.
It can be used when referring to experts or recognized figures in specific areas of study or practice.
Example: "The conference will feature several authorities in the fields of environmental science and renewable energy."
Alternatives: "experts in the areas of" or "specialists in the domains of".
She is one of Lebanon's foremost authorities in the fields of community engagement, research and development and gender equality. .
With help from some of the world's most respected authorities in the fields of marine science and commercial fishing, as well as other influential activists, and a very talented co-author, Mike D'Orso, I wrote "Oceana: Our Endangered Oceans and What We Can Do to Save Them "-- a book that describes the most critical threats to the oceans and how we can turn them around.
Authorities in the fields of obstetrics and anaesthesia encourage use of labour analgesia.
Regulatory convergence and cooperation among the authorities in the field of medical products (medicines and medical devices) are essential to deliver safe and efficacious products quickly to patients.
PIC/S is a non-binding co-operative agreement between regulatory authorities in the field of GMP of medicinal products for human or veterinary use.
Besides these direct influences, the sources for Peter's works on logic can be traced back to Boethian-Aristotelian logic, and authorities in the field of grammar such as Priscian and Donatus.
As a support for cities in their mobility planning, the Ministry continuously finances methodological, state-of-the art and assessment studies, e.g. via the creation and the financing of Cerema, a public body which supports national and local authorities in the field of sustainable development.
Since 1987, Chinese authorities in the field of biotechnology have issued a series of policies to promote and standardize the development of the whole industry.
Several prominent authorities in the field of patient safety have promoted checklists in an attempt to prevent mistakes related to surgery.
Authorities in the field of evidence-based medicine have specifically addressed the fact that some treatments have effects that are "… so dramatic that randomised trials are unnecessary " [ 43].
