magazineAuthors: Nguyen Hoai Bac; Hoang Long (2021)
We examined 501 patients with non - obstructive azoospermia to evaluate clinical, subclinical, and genetic
characteristics. The results show that the average age of patients in the study was 29.8 ± 5.5 years. Primary
infertility accounts for the majority, with a rate of 90.3%. There was 38.6% of patients had a history of mumps
orchitis 
