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    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    L'ecografia transrettale nella valutazione degli effetti indotti dalla laser terapia endocavitaria in pazienti portatori di prostatite batterica

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    104 patients with acute bacterial prostatitis were randomized to an antibiotic therapy group (group I) and an antibiotic plus laser therapy group (group II). Laser therapy was applied ever other day through a trans-rectally inserted fiberoptic probe. Resolution of the symptoms occurred in 87% of the patients in group I and 92% in group II (p < 0.001). Transrectal ultrasound resulted in resolution of the peri-prostatic venous plexus congestion in 43.7% of the patients in group I and 89.7% in group II. In conclusion, the combination of laser therapy and antibiotics in bacterial prostatitis provides both a better resolution of the symptoms and a reduction or disappearance of the peri-prostatic venous congestion
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