Maternal age and the rising incidence of hypertensive disorders of pregnancy: A comprehensive analysis of national claims data from Japan - Naomi Maeda; Masayuki Koyama; Shintaro Takatsuka; Keisuke Oyatani; Nobuaki Himuro; Tasuku Mariya; Yoshika Kuno; Shiro Hinotsu; Tsuyoshi Saito; Hirofumi Ohnishi (PLoS ONE, 2025)