Universal cervical length screening and treatment with vaginal progesterone to prevent preterm birth: a decision and economic analysis.
Cahill AG, Odibo AO, Caughey AB, Stamilio DM, Hassan SS, Macones GA, Romero R. Universal cervical length screening and treatment with vaginal progesterone to prevent preterm birth: a decision and economic analysis. Am J Obstet Gynecol. 2010 Jun; 202(6):548.e1-8.