title: Reply.
authors.affiliation: Brigham and Women's Hospital, Boston, Mass. Electronic address: mcastells@partners.org.
authors.forename: Mariana C
authors.initials: MC
authors.lastname: Castells
authors.affiliation: Brigham and Women's Hospital, Boston, Mass.
authors.forename: Lora
authors.initials: L
authors.lastname: Bankova
mesh_terms: D001768:Blister / Q000209:etiology*; D006801:Humans; D008297:Male; D034701:Mastocytosis, Cutaneous / Q000150:complications*; D014611:Vaccination / Q000009:adverse effects*