Department of Obstetrics and Gynecology, Indiana University, Indianapolis, Indiana; RTI International, Washington, DC; the University of California–Irvine, Irvine, California; the University of Pittsburgh, Pittsburgh, Pennsylvania; Northwestern University, Chicago, Illinois; Case Western Reserve University, Cleveland, Ohio; the University of Utah, Salt Lake City, Utah; Christiana Care, Christiana, Delaware; the University of Pennsylvania, Philadelphia, Pennsylvania; The Ohio State University, Columbus, Ohio; Columbia University, New York, New York; the University of Texas Medical Branch, Galveston, Texas; and the Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland.
Corresponding author: David M. Haas, MD, MS, Department of Obstetrics and Gynecology, Indiana University School of Medicine, 550 N University Boulevard, UH 2440, Indianapolis, IN 46202; email: [email protected].
Supported by grant funding from the Eunice Kennedy Shriver National Institute of Child Health and Human Development: U10 HD063036, RTI International; U10 HD063072, Case Western Reserve University; U10 HD063047, Columbia University; U10 HD063037, Indiana University; U10 HD063041, University of Pittsburgh; U10 HD063020, Northwestern University; U10 HD063046, University of California–Irvine; U10 HD063048, University of Pennsylvania; and U10 HD063053, University of Utah. In addition, support was provided by respective Clinical and Translational Science Institutes to Indiana University (UL1TR001108) and the University of California–Irvine (UL1TR000153).
Financial Disclosure The authors did not report any potential conflicts of interest.
Comments and views of the authors do not necessarily represent views of the National Institutes of Health.
The authors thank Amber Lee, BS, for her assistance with adjudication of medication codes for the data set.
Each author has indicated that he or she has met the journal's requirements for authorship.
