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Saleh AA, Ratajeski MA, Bertolet M. Grey Literature Searching for Health Sciences Systematic Reviews: A Prospective Study of Time Spent and Resources Utilized. EBLIP [Internet]. 2014 Sep. 6 [cited 2025 Sep. 30];9(3):28-50. Available from: https://journals.library.ualberta.ca/eblip/index.php/EBLIP/article/view/20629