A Systematic Review of the Robson Classification for Caesarean Section: What Works, Doesn't Work and How to Improve It Betrán, Ana Pilar ; Vindevoghel, Nadia ; Souza, Joao Paulo ; Gülmezoglu, A. Metin ; Torloni, Maria Regina Abstract Publication: PLoS ONE Pub Date: June 2014 DOI: 10.1371/journal.pone.0097769 Bibcode: 2014PLoSO...997769B