QIN, Weibing; CAO, Heran; ZHANG, Zhixing; NIE, Hua; HAN, Lu; LIU, Xiaohua. Establishing reference values and evaluating diagnostic utility of scrotal ultrasound for azoospermia subtypes: A cross-sectional study in Guangdong, China. The Ultrasound Journal, Fidenza (PR), Italy, v. 18, n. 1, p. 18307, 2026. DOI: 10.5826/tuj.2026.18307. Disponível em: https://mattioli1885journals.com/index.php/theultrasoundjournal/article/view/18307. Acesso em: 23 jun. 2026.