“…Fifty-four studies examined the perceptions of authorship buy different stakeholders, authorship definitions in use and actual practices, and contributions for deserving authorship (T able 1 and T able S3): 31 studies from the health research field [13], [16], [23], [25], [26], [31], [35], [36], [39], [41], [47], [50], [52], [54], [57], [60], [65], [66], [77], [80], [82], [94], [100], [102]–[104], [106], [110]–[112], [121];12 studies from social sciences [11], [12], [14], [18], [24], [27], [33], [34], [48], [49], [55], [91], 6 studies from more than one research field [29], [45], [90], [116], [122], [128] and 5 studies from natural sciences, published in 6 articles [46], [58], [79], [101], [119], [126].…”