There was, however, considerable heterogeneity between the studies.
Given this general trend, there is considerable heterogeneity between regions and countries in their propensity to collaborate which we attribute to differences in size, quality and accessibility.
Substances were collapsed into a single variable to eliminate null values (i.e., participants only had to report using one of the above to meet inclusion criteria) and to account for considerable heterogeneity between substance classes.
There was considerable heterogeneity between studies with regard to the design, follow-up time, surgical techniques, and method of preparation of plasma concentrates, and therefore the data could not be analyzed quantitatively.
Studies of contact networks for livestock populations, concentrating on between-farm movements, have highlighted considerable heterogeneity between and within contact networks [14].
Comparing sister chromosomes in interphase revealed similar morphology and nuclear position in some daughter pairs, but considerable heterogeneity between other daughter chromosomes (Figure 1B E).
This systematic review provides evidence of modest associations between childhood SEP and physical capability levels in adulthood, although considerable heterogeneity between studies was observed.
Although plasma is one of the most accessible biological materials it contains vast assemblies of proteins and complexes and exhibits considerable heterogeneity between and within subjects that hinder proteomic analysis of low abundance proteins [10].
This review also reported considerable heterogeneity between study findings.
Figure 2 displays considerable heterogeneity between preferred specialties.
There was a considerable heterogeneity between the various studies.
