The three origins of DUI for the taxa included in this study runs counter to the prevailing hypothesis of a single origin for this complex trait with subsequent reversals to SMI [ 23, 26- 28] but it is not unexpected given the bias toward "DUI absence" stemming from the difficulties in confirming the presence of DUI (e.g., [ 20, 25, 26, 54]).
Part of the caution stems from the difficulty in securing financing.
But in its decision not to extend Purple Hearts to PTSD sufferers, first reported Tuesday by Stars and Stripes, the Pentagon said part of the problem stemmed from the difficulty in objectively diagnosing the disorder.
The intensified interest in knowledge management and data mining stems from the difficulty in identifying computational models able to approximate human behaviors and abilities in resolving organizational, social, and physical problems.
The complication, Moore said, stemmed from the difficulty in finding potential jurors who did not have strong feelings about the violent Unite the Right rally, or of the car attack, which left Heather Heyer, a Charlottesville resident, dead and dozens injured.
The challenge stems from the difficulty in defining professionalism and the disconnect between standards and recognition, and behavior.
Part of the effect of S5a seems to stem from the difficulty in processing (or deubiquitinating) forked chains.
This partially stems from the difficulty in establishing an appropriate high throughput in vitro system, which would presumably also require ATRIP and other components (Wagner and Kaufmann, 2010).
Such methods are prone to recall bias and measurement error, some of which stems from the difficulty in translating answers to quantitative estimates of overall physical activity and, therefore, may result in an imprecise reflection of daily physical activity (25).
A second limitation stems from the difficulties in validating blood loss measurements during the initial phase of the study when monitoring visits were not possible because of poor weather conditions.
This lack of knowledge stems from the difficulty of contacting clients in western countries; in addition, there is little epidemiological information about men who pay for sex [ 4, 5].
