“…The number of authors of original contributions greatly varied, with most articles having between three and six authors. Only five papers were written by a single author [8][9][10][11][12] ; on the other end lies a paper with twenty-one authors. 13 Collaboration with different institutions on a national (41.5%) and international basis (15.5%) indicates the steadily increasing importance of a global network, compared to 43% of articles from authors who worked together in a single institution.…”