Jyh Kae NienSebastián E. IllanesRicardo GómezH. FigueroaManuel SchepelerMario CarstensPaola SearovicRamón SerraRose Antonio ArraztoaJuan A. Ortiz2026-03-222026-03-22200810.1016/j.ajog.2008.09.196https://doi.org/10.1016/j.ajog.2008.09.196https://andeanlibrary.org/handle/123456789/62593enMedicineCervixGestational ageObstetricsFetusGestationPregnancyAndrologyGynecology169: Short cervix is not characterized by placental apoptosis: Examining the maternal plasma free fetal DNA (ffDNS) in patients at risk for preterm laborarticle