A potential limitation is the limited availability of individual-level confounders, such as smoking status, which could bias the health effect estimates.
Due to the limited availability of human neural tissue, and in view of potential inter-species incompatibility, we decided to attempt induction of expression using commonly available pharmaceuticals.
Disadvantages of this therapy are the high cost and limited availability of the devices to specialized medical centers, limited knowledge of potential long-term side effects and the necessity to employ highly trained personnel.
This lack of research, both in the investigated domains of potential determinants and the low number of studies available, may be the result of limited availability of appropriate and nonvalidated research instruments to measure physical activity and its determinants.
Due to the limited availability of studies within each subgroup, our power to identify potential predictors of between-trial heterogeneity in meta-regression was limited.
After considering all of these potential new safety issues and the limited availability of clinical data for this new connector technology, one might conclude that the balance of benefits and risks is unclear regarding the new DF-4 standard.
Unnecessary transfusion of blood products should be avoided because of potential risks associated with the procedure, side effects, and the limited availability of blood units (12).
The internet has the potential to reduce barriers to accessing services, including limited availability of skilled professionals, geographic isolation, the cost and inconvenience of travel and child care, and limited flexibility in work schedules [ 12].
The recent development of polymer-based computer-aided design and computer-aided manufactured (CAD/CAM) milling blocks and the limited availability of independent studies on these materials make it pertinent to evaluate their properties and identify potential strengths and limitations.
The potential existence of factors present at community level such as cost and limited availability of both nets and insecticides, which have been reported to cause low use of ITNs, will need to be explored [ 32].
