Subject
Obstetrics and Gynaecology
Reference3 articles.
1. Challenges in defining and classifying the preterm birth syndrome;Kramer;Am J Obstet Gynecol,2012
2. Classical and “true” gestational postmaturity;Boyce;Am J Obstet Gynecol,1976
3. Zeitrechnung der Schwangerschaft;Carus,1820