A previous genomewide association study of nonobstructive azoospermia (NOA) in the Han Chinese population identified three risk loci (rs12097821, rs2477686, and rs10842262) and provided strong evidence for a genetic influence in male infertility. However, recently, a follow-up study of these single nucleotide polymorphism (SNP) loci in the Japanese population showed that none of them were signi...

OBJECTIVES To compare, in a retrospective study, the ultrasound findings and hormonal changes after testicular sperm extraction (TESE) using the conventional multiple biopsy approach and the more recent microdissection technique. TESE has been performed using the conventional multiple biopsy approach and the more recent microdissection technique. METHODS A total of 435 men with nonobstructive...