Top-tier journals were examined in terms of the financial contributions of authors, including page charges. Such fees began as early as the 1930s and continue to become more common. A comparison within and between the journals in the Sciences and Social Sciences sections of the Journal Citation Reports indicated that Sciences journals more commonly had page charges. A quantitative examination of page fees may provide some insight into the ongoing debate about author-pays Open Access.
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Curb et al. (2012) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: