The phrase "are frequently concerned" is correct and usable in written English.
It can be used when discussing topics or issues that are often a source of worry or interest for a particular group or individual.
Example: "Researchers are frequently concerned about the impact of climate change on biodiversity."
Alternatives: "often worried" or "regularly troubled".
Bertolucci's films were frequently concerned with sex, said Paredes, "because he loves woman [sic] and also a little bit of afraid of them".
14 There is no difference between the epicheireme and the syllogism, except that the latter has a number of forms and infers truth from truth, whereas the epicheireme is frequently concerned with statements that are no more than credible.
Self-testing can be liberating from the drudgery of operating only with the pattern of (often poor or inconvenient) service provided by the healthcare system, as some bloggers have indicated, but, at the same time, there are frequently concerns about the effectiveness, reliability and use of self-testing equipment.
Fatigue, depression, marital disruption and problems with infertility are frequently reported concerns by these survivors, not to mention problems with insurances and mortgages [ 6, 8– 11].
In addition, they were more frequently concerned about high amounts of sedation and paralysis among control patients, contrary to our hypothesis.
Fathers were more frequently concerned about limitations upon children's activities of daily living such as restrictions in sports participation.
Questionnaires and interviews are frequently used in studies concerning non-attendence for breast screening.
There are also frequently concerns about the selection of Q-TWiST states and utilities, particularly for the latter, which may be very arbitrary and often questionable.
Fear of future suffering, due to either progression of symptoms, or impairment of strength to bear the suffering, constitute two aspects which are frequently mentioned in Dutch literature concerning EPAS.
