Maternal corticosteroid use and orofacial clefts: A study by Carmichael et al

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: Carmichael SL, Shaw GM, Ma C, Werler MM, Rasmussen SA, Lammer EJ for the National Birth Defects Prevention Study. Maternal corticosteroid use and orofacial clefts. Am J Obstet Gynecol 2007;197:585.e1-585.e7.