?:authorAffiliation
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[\'Division of Infectious Diseases, Department of Medicine Perelman School of Medicine, University of Pennsylvania, Philadelphia.\', \'Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia.\', \'Vaccine Education Center, Children\'s Hospital of Philadelphia, Philadelphia, Pennsylvania.\', \'Division of Infectious Diseases, Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia.\', \'Children\'s Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania.\', \'Division of Occupational and Environmental Medicine, Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia.\']
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