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The modified "hemi-clamshell" approach for tumors of the cervicothoracic junction
No full textThe anterior approaches proposed for treatment of the apical chest tumors (anterior transcervical, transmanubrial, and hemi-clamshell) have precise advantages and limits. To avoid these limits we have modified the hemi-clamshell with the resection of the first costal cartilage and the costoclavicular ligament. This allows a wider opening of the sternocostal flap, with safe control of the entire subclavian vessels as well as easier access to the T1 to T3 vertebral bodies and the posterior chest wall
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
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