The efficacy and safety of Femoston combined with Baoqing granules for kidney Yin deficiency in perimenopausal women: a randomized, double-blind, placebo-controlled trial. - Li C; Lei HY; Wang RL; Zhang JB; Huang ZM; Shen HP; Luo YL; Ye T; Wang YZ; Yuan Y (Frontiers in endocrinology, 2026)