Because of this significant limitation, viral delivery systems have been primarily limited to in vitro work, with retroviruses playing an important role in RNAi research.
These studies demonstrated that BNP levels were higher in patients with cardiogenic pulmonary edema compared with those with ALI but that the diagnostic utility of BNP was limited because of significant overlap.
Evidence for the carcinogenicity of shift work in humans is limited because of significant heterogeneity of the results, thus more in-depth research in needed.
However, comparisons between NHANES III and such databases are limited because of significant differences in inclusion criteria, study populations, and classification of racial and ethnic groups between NHANES III and the other studies.
Obtaining accurate local data is essential both because the income of CBHI is often limited and because of significant differences across locations in the number and type of illness episodes [ 17- 19].
However, inferences regarding the role of non-monetary incentives in surveys of medical professionals are limited from this study because of significant clinical and statistical heterogeneity.
Moreover, many patients died within the first 2 3 days after arrest because of significant cardiovascular impairment or extended post-anoxic brain injury [37], limiting the impact of lymphopaenia on the occurrence of secondary infections or delayed organ dysfunction.
We limited our review to the past several years because of significant advances in climate modeling (Solomon et al. 2007).
Satellite telephony still has significant limits.
Moreover, DCE is very limited for the detection and grading of cancers in the transition zone because of significant overlap with stromal BPH (Fig. 7).
