. "Some critics of Sci-Hub have complained that many users can access the same papers through their libraries but turn to Sci-Hub instead  - for convenience rather than necessity. The data provide some support for that claim. The United States is the fifth largest downloader after Russia, and a quarter of the Sci-Hub requests for papers came from the 00 members of the Organization for Economic Cooperation and Development, the wealthiest nations with, supposedly, the best journal access. In fact, some of the most intense use of Sci-Hub appears to be happening on the campuses of U.S. and European universities....Even for journals to which the university has access, Sci-Hub is becoming the go-to resource, says Gil Forsyth, another GWU engineering Ph.D. student. "If I do a search on Google Scholar and there's no immediate PDF link, I have to click through to ‘Check Access through GWU' and then it's hit or miss," he says. "If I put [the paper's title or DOI] into Sci-Hub, it will just work." He says that Elsevier publishes the journals that he has had the most trouble accessing...." 