“…10,36,38,42 On the other hand, only two articles included a definition or description of gaming in the abstract section. 15,35 Six included some description of gaming in the main text. 10,15,39,46,47,50 These articles referred to e-sports (two articles), 34,39 multiplayer online games (one article), 15 AR games (one article), 15 video and/or computer games (five articles), 10,15,34,46,50 freemium games (one article), 10 and games that involved microtransactions (one article).…”