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Male infertility is commonly seen at urology clinics and 10% to 20% of infertile males are found to be azoospermic. Azoospermia is classically categorized as nonobstructive or obstructive. This classification tailors the evaluation, diagnosis and proper treatment. We performed a retrospective study to provide an updated etiology of azoospermia in patients in the United States in a universal health...
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