Pandipati, Santosh Transabdominal ultrasound for cervical length screening (or not?). [electronic resource] - American journal of obstetrics and gynecology 06 2017 - 621-622 p. digital Publication Type: Letter; Comment ISSN: 1097-6868 Standard No.: 10.1016/j.ajog.2017.02.019 doi Subjects--Topical Terms: Cervical Length MeasurementCervix UteriFemaleHumans