The phrase "long standing concern" is correct and usable in written English.
You can use it to refer to a problem that has been ongoing for some time, or something that has been a worry for a long time. For example: "The lack of resources is a long standing concern in many developing countries."
A long standing concern with means-tested social welfare payments for low income families with school-age children is that they can reduce incentives to participate in the labour market, potentially leading to long episodes of welfare dependence, depreciation of human capital, and ultimately exacerbating rather than alleviating poverty.
At the heart of evidence-based practice in stuttering treatment are four issues: (1) the collection of data to inform treatment; (2) the long standing concern with maintenance of treatment gains; (3) the need to demonstrate accountability to clients, payers and our profession as service providers; and (4) the desire to advance theoretical knowledge.
There is a long standing concern that minorities, in particular African Americans and Hispanics, are less willing to participate in clinical research than non-minorities.
Some of these obligate biotrophs have been of long standing concern for agriculture and forestry while others have emerged in recent epidemics.
Whether vignette studies like ours may be representative of real life practice has been a long standing concern [ 17], although there are some studies in support of their validity [ 18– 218.
The figures were produced by the doctors' union the BMA, which has had long standing concerns over the service.
A recent study by GfK (PDF) again highlights how long standing concerns regarding a lack of skilled workers in the industry is proving to be a massive headache for startups.
On Wednesday, US state department spokesman Patrick Ventrell said the country had "long standing concerns" about the lack of transparency and due process in North Korea's legal system and in Mr Pae's case.
The events in Chemnitz have also highlighted long standing concerns about far-right sympathizers among German law enforcement officials.
These results have implications on the long standing questions concerning the mechanisms of gene expression regulation in trypanosomatids.
It has maintained its long-standing concern for Italian social problems.
