In the roundtable that follows, clinicians discuss a study published in this issue of the Journal in light of its methodology, relevance to practice, and implications for future research. Article discussed:. Yang SH, Nobuhara KK, Keller RL, et al. Reliability of the lung-head ratio as a predictor of outcome in fetuses with isolated left congenital diaphragmatic hernia at gestation outside of 24 to 26 weeks. Am J Obstet Gynecol 2007;197:30.e1-30.e7.