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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Could Tenofovir - Modify the Model - End-Stage Liver - Disease (MELD) Score in Patients - With End-Stage Liver Disease Eligible for Liver Transplantation?
No full textOverview on the incidence and the characteristics of HIV-related opportunistic infections and neoplasms of the heart: impact of highly active antiretroviral therapy
No full textAbstract: The manifestation of cardiac involvement in the course of HIV infection has been significantly changed since the introduction of highly active antiretroviral therapy. While in the pre-highly active antiretroviral therapy era the predominant cardiac pathology was represented by localization of opportunistic infection, now new forms of heart involvement are described. Among infectious agents, viruses and bacteria caused the majority of infections. The 'classic' opportunistic agents, such as Toxoplasma, non-tuberculous mycobacteria, cytomegalovirus and Cryptococcus, have virtually disappeared. Endocarditis is still the most frequent infectious disease of the heart in HIV-infected patients, occurring mainly in drug users, and with the improvement in prognosis, the need for cardiac surgery is increasing. Tuberculosis, the incidence of which is still high in poor resources settings where antiretroviral drugs are not available, is a frequent cause of pericarditis, frequently evolving into cardiac tamponade. Recent studies suggest the direct role of HIV as the cause of myocarditis and heart vessel pathology. This finding points out the need of improving our knowledge about the pathogenesis, diagnosis and treatment of this kind of complicatio
Mitochondrial toxicity in HIV-HCV coinfection: It depends on the choice of antiretroviral drugs?
No full textDidanosine-ribavirin combination: synergistic combination in vitro, but high potential risk of toxicity in vivo
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