1. Division of Newborn Medicine, Department of Pediatrics
2. Heart, Lung, Blood, and Vascular Medicine Institute, Department of Medicine
3. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
4. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
5. Bayer AG, Wuppertal, Germany
6. University of Witten/Herdecke, Witten, Germany
7. University of Halle, Halle, Germany
8. Hannover Medical School, Hannover, Germany; and
9. Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania