1 Department of Pediatrics, University of Pittsburgh School of Medicine, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA. Electronic address: terence.dermody@chp.edu.
2 Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA.
3 Department of Pediatrics, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland Clinic Children's Hospital, Cleveland, OH.
4 Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL.
5 Federal Policy, Advocacy, and Consulting Team, Faegre Drinker Consulting, Washington, DC.