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Multicast multimedia distribution, despite the benefits it offers, features a number of unresolved issues, such as network and users heterogeneity. Layered stream organization has been considered as suitable to cope with these issues. In this paper we, initially, study proposed mechanisms for the multicast delivery of layered video streams, highlighting(More)
BACKGROUND Scoring systems have been widely used to evaluate the severity and activity of oral lichen planus (OLP). The aim of the present study was to compare two existing (one modified) scoring systems in the evaluation of OLP severity and correlation with pain. Three differently experienced raters were involved. MATERIALS AND METHODS Consecutive(More)
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