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Flowchart of search process and study selection according to PRISMA guidelines. Multiple reasons allowed. 1A: Population (i.e., persons not diagnosed with endometriosis); 2B: Intervention (i.e., publications with and without interventions that do not allow an assessment of diagnosis time); 3C: Outcome (i.e., publications that do not allow an assessment of diagnosis time); 4D: Study type (i.e., case reports); 5Several records reporting on the same study results.
