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Dot plots displaying the differences in hormonal levels between patients with iNOA with negative versus positive sperm retrieval at microdissection testicular sperm extraction. Data analysed using Mann–Whitney test. iNOA, idiopathic non-obstructive azoospermia; AMH, Anti-Müllerian Hormone; InhB, Inhibin B; E2, 17β-oestradiol; tT, total testosterone.
