Sonographic Evaluation of the Maternal Uterine Cervix
Sonia Hassan, MDPerinatology Research Branch of NICHD/NIH/DHHS
Wayne State University School of Medicine
Bethesda, MD and Detroit, MI
Edgar Hernandez Andrade, MD
Perinatology Research Branch of NICHD/NIH/DHHS
Wayne State University School of Medicine
Bethesda, MD and Detroit, MI
Roberto Romero, MD, DMedSci
Perinatology Research Branch
Division of Obstetrics and Maternal-Fetal Medicine
Intramural Division, NICHD, NIH, DHHS
Detroit, MI