Menstrual cycle length variation by demographic characteristics from the Apple Women's Health Study.
Huichu LiElizabeth A. GibsonAnne Marie Z. JukicDonna D. BairdAllen J. WilcoxChristine L. CurryTyler Fischer-ColbrieJukka-Pekka OnnelaMichelle A. WilliamsRuss HauserBrent A. CoullShruthi MahalingaiahPublished in: npj Digit. Medicine (2023)