668 - Erythropoiesis-stimulating agents and hospital variation in transfusion-free survival of extremely preterm infants

Timothy M. Bahr, University of Utah, Provo, UT, United States; Matthew Rysavy, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States; Benjamin Carper, RTI International, Research Triangle Park, NC, United States; Ravi M. Patel, Emory University & Children's Healthcare of Atlanta, Atlanta, GA, United States; Valerie Y.. Chock, Stanford University School of Medicine, Sunnyvale, CA, United States; Anca M.. Pasca, Stanford University, Palo Alto, CA, United States; Robert D.. Christensen, University of Utah School of Medicine, Salt Lake City, UT, United States; Robin K. Ohls, University of Utah, Salt Lake City, UT, United States; NICHD Neonatal Research Network, National Institutes of Health, Bethesda, MD, United States