| http://www.w3.org/ns/prov#value | - Most studies were of poor- to fair-quality; small; underpowered to detect statistically significant differences; and highly variable in patient populations, ulcer characteristics (for example, anatomical site, duration, and stage), interventions (even within a given intervention category, such as different types of foam dressings), and comparators (especially in implementation of standard, or usua
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