Usefulness of trappin-2 level in cervicovaginal secretion in predicting spontaneous preterm birth in asymptomatic high-risk women: A prospective case–control study at a tertiary care centre. SJHR-Africa [Internet]. 2025 Dec. 15 [cited 2026 Jul. 26];6(12):7. Available from: https://www.sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/2269