The phrase "a significant source of concern" is correct and usable in written English.
It can be used when discussing issues or problems that are causing worry or anxiety.
Example: "The recent rise in cyberattacks has become a significant source of concern for businesses worldwide."
Alternatives: "a major cause for concern" or "a considerable worry."
Mr. Roye said in June, "Despite existing disclosure requirements and educational efforts, the degree to which investors understand mutual fund fees and expenses remains a significant source of concern".
Eggen et al. [26] have described that PPCPs from old landfill leachate with treatment based on aeration and sedimentation may represent a significant source of concern for new and emerging pollutants in groundwater.
The role of relay maloperation in wide area disturbances must be taken as a significant source of concern, as wide area disturbances have played a key role in several recent blackouts [7, 8] and the management of these wide area disturbances is beyond the scope of most of the existing protection [13].
The possibility of development of resistance to any new antimicrobial is a significant source of concern.
Pathogenic rare variants will be a significant source of concern when practicing genomic medicine.
Postoperative morbidity and mortality is a significant source of concern in the management of the elderly patient with colorectal cancer.
A significant source of tension for students concerns the use of the information in the ePortfolio.
The second significant source of concern about Lewis's conception of fundamental ontology is the role or rather lack thereof that modal notions have in it.
Road transport is a significant source of both safety and environmental concerns.
Similar licensing deals worldwide provide a significant source of revenue for the business mogul's organization.
The use of veterinary antibiotics in concentrated animal feeding operations (CAFOs) is a growing concern as a significant source of contamination (3).
