Sentence examples for frequent difficult from inspiring English sources

In addition, a frequent, difficult question is the differentiation between postsurgical changes and residual tumor after recent brain tumor surgery.

In addition, a frequent, difficult question is the differentiation between postsurgical changes and residual tumour after recent tumour surgery or between radiation induced lesions and recurrent or residual tumour.

Nocturnal respiration and sleep disturbances are additional risk factors; noninvasive ventilation and cough assistance can be indicated prior to surgery, and anesthesia should be performed by an experienced pediatric anesthesiologist because of frequent difficult intubation in almost two thirds of these patients.

Growing evidence demonstrates that in Parkinson's Disease (PD) sleep disturbances are frequent and difficult to treat.

This phenomenon is even more evident in heavy-section ductile iron castings where defects are more frequent and difficult to control.

Ontologies are complex systems of axioms in which unanticipated consequences of changes are both frequent, and difficult for ontology authors to apprehend.

David Moskovitz, who directs the Regulatory Assistance Project, a nonprofit that helps promote green policies in China, was even more blunt: "The most frequent and difficult question we get in China with every policy initiative we put forward is: 'If it is so good, why aren't you doing it?' It's hard to answer — and somewhat embarrassing.

Although healthy lifestyles (HL) offer a number of health benefits, nonadherence to recommended lifestyle changes remains a frequent and difficult obstacle to realizing these benefits.

For a subset of patients, we also report 1-year follow-up data of patients with frequent or difficult to treat headaches.

Adult patients (>18 years) with frequent andor difficult to treat headache diagnoses of migraine (M), tension-type headache (TTH), and medication overuse headache (MOH) were consecutively enrolled within a time period of 18 months (11/2006 04/2008).

As charter schools become more numerous and prominent, choosing sites and other decisions will become more frequent, and difficult.