Menstrual symptoms and risk of preterm birth: A population-based longitudinal study.
Ingrid Jean RowlandsSan Kyu Kyu AyeDanielle A J M SchoenakerAnnette J DobsonGita D MishraPublished in: Birth (Berkeley, Calif.) (2020)
Severe period pain, heavy periods, and irregular periods before a second or subsequent birth may be associated with preterm birth.