The association between serum soluble fms-like tyrosine kinase-1, placental growth factor, and soluble fms-like tyrosine kinase-1/placental growth factor ratio in singleton pregnancy and placental abruption: a systematic review and meta-analysis. - Kosińska-Kaczyńska K; Szymusik I; Brawura Biskupski Samaha R; Sys D (American journal of obstetrics and gynecology, 2025)