Liliana Rosero

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Resistance of Helicobacter pylori to clarithromycin is the most common cause of treatment failure in patients with H. pylori infections. This study describes the MICs and the presence of 23S rRNA mutations of H. pylori isolates from Bogotá, D.C., Colombia. H. pylori were isolated from gastric biopsies from patients with functional dyspepsia. Clarithromycin(More)
We present a new access control method called Granular. Granular extends traditional access control methods in order to manage XML-like documents by means of a rules set that allows easy administration of the system describing the accessed content using a suitable set of rights. One of the main novelties is the definition of closed and open authorizations,(More)
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