1. Duke Clinical Research Institute; Duke University School of Medicine; Durham North Carolina USA
2. Department of Pediatrics; Duke University School of Medicine; Durham North Carolina USA
3. Division of Pharmacotherapy and Experimental Therapeutics; UNC Eshelman School of Pharmacy; The University of North Carolina at Chapel Hill; Chapel Hill North Carolina USA
4. Division of Emergency Medicine; Children's National Medical Center; Washington DC USA
5. Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California, San Diego; California USA
6. Emmes Corporation; Rockville Maryland USA