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In South Africa, some universities follow a model based on the British system. Thus, at the University of Cape Town and the University of South Africa (UNISA), the percentages are calibrated as follows: a first-class pass is given for 75% and above, a second (division one) for 70–74%, a second (division two) for 60–69%, and a third for 50–59%.
Determining how many people have endometriosis is challenging because definitive diagnosis requires surgical visualization through laparoscopic surgery. [178] Criteria that are commonly used to establish a diagnosis include pelvic pain, infertility, surgical assessment, and in some cases, magnetic resonance imaging.