title: Reply
authors.affiliation: Vanderbilt University School of Medicine, Department of Pediatrics, Divisions of Allergy, Immunology, and Rheumatology and of Infectious Diseases Nashville, TN 37232, USA.
authors.initials: AR
authors.lastname: Lawton
authors.initials: KM
authors.lastname: Edwards
authors.initials: KT
authors.lastname: Thomas