This is a retrospective study and a possibility of unrecognized selection bias and recall bias exists.
Several authors have reported the possibility of unrecognized unstable fractures in their series of stable fractures (which are often treated conservatively), negatively influencing the outcome [4, 61, 103, 131].
Because of the possibility of unrecognized side effects or of drug interactions, practitioners should enquire whether their patients, especially those with chronic, intractable or difficult to treat conditions, are receiving high dose IV vitamin C treatment elsewhere.
The possibility that unrecognized glucose intolerance antedated the pregnancy is not excluded.
It does not exclude the possibility that unrecognized glucose intolerance may have antedated or begun concomitantly with the pregnancy.
Inconsistencies of this kind and the possibility of unrecognized paralogy leading to incorrect gene trees have made urancestral gene assignments unreliable [ 15].
We also did not have hourly personal-level gaseous pollutant information, and there is a possibility for unrecognized additional, or confounding, effects of these copollutants.
24 The limitations of this study are inherent to all observational studies, including nonrandom allocation of treatments and the possibility of unrecognized confounding factors.
Although most cases resolve with delivery, the definition applied whether the condition persisted after pregnancy and did not exclude the possibility that unrecognized glucose intolerance may have antedated or begun concomitantly with the pregnancy.
On renal ultrasonography, parenchymal changes predominated in the current study, suggesting the possibility of unrecognized hematogenous spread of Candida in infants who are suspected to have candidal infection limited to the urinary tract.
