RT Book, Section A1 Roman, Ashley S. A2 DeCherney, Alan H. A2 Nathan, Lauren A2 Laufer, Neri A2 Roman, Ashley S. SR Print(0) ID 1159953685 T1 Late Pregnancy Complications T2 CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071833905 LK accessmedicine.mhmedical.com/content.aspx?aid=1159953685 RD 2024/04/24 AB ESSENTIALS OF DIAGNOSISEstimated gestational age of greater than 20 0/7 weeks and less than 37 0/7 weeksRegular uterine contractions at frequent intervalsDocumented cervical change or appreciable cervical dilatation or effacement