31 In addition, this analysis in eight population based studies confirmed the observation of previous studies that 25(OH D concentrations vary strongly by age, sex, season, education, obesity, physical activity, and smoking.
This registry-based study confirmed that the risk of revision was significantly higher for hospitals performing less than 10 Oxford III UKA procedures a year than for those performing more than 40 Oxford III UKA procedures a year in Norway between 1999 and 2012.
Although the extrapolation of these studies is limited due to low patient numbers and/or selection of dyspepsia patients from secondary care settings, a large international population-based study confirmed that upper gastro-intestinal symptoms were associated with psychological stress [ 21].
Study after study confirms that comprehensive sex education does exactly that.
Similar to other studies [ 1, 3, 6, 21], the current study confirmed that based on the patients' reports, a high percentage of physicians (40%) and pharmacists (68%) were not aware of BBT used by cardiovascular patients.
The results of this study confirmed that LC MS based metabolomics method could be used as reliable tool for taxonomic classification of marine ascidian species and species discrimination in future studies.
The results of this study confirmed that the APTMS based Ag-Au core-shell thin film nanoislands offered a better performance over the PVA based Ag-Au core-shell thin film nanoislands.
A National Academy of Sciences report, basing its findings on the Faeroe Islands study, confirmed that this level was safe.
Numerous studies based on in vivo and in vitro study confirmed that GTE and their constituents show health-promoting protective effect at a certain dose concentration [61].
The study confirmed that tropical rice based cropping systems have a great potential in storing and maintaining C in soils and thereby to facilitate nutrient availability.
Numerous results based on in vivo and in vitro study confirmed that green tea and their constituents such as EGCG show health promoting effect at certain dose through the modulation of various biological activities.
