Associations between self-reported personal care products use and menstrual cycle length and regularity in a US digital cohort. - Wang Z; Peebles E; Asokan G; Duttweiler L; Jukic AM; Wilcox AJ; Abrams K; Suharwardy SH; Hauser R; Williams MA; Onnela JP; Coull BA; et al. (Environment international, 2026)