Natural pregnancy following kidney transplantation in an azoospermic male: a case report - Nguyen, Ngoc Thai; Nguyen, Huu Hoang Quan; Takeshima, Teppei; Kuroda, Shinnosuke; Yumura, Yasushi; Atmoko, Widi; Nguyen, Huynh Dang Khoa (Translational Andrology and Urology, 2025)