[1] Kings Coll London, Dept Asthma Allergy & Resp Sci, London WC2R 2LS, England
[2] Guys & St Thomas NHS Fdn Trust, Childrens Allergy Serv, London, England
[3] Natl Jewish Hlth, Paediat Allergy, Denver, CO USA
[4] Icahn Sch Med Mt Sinai, Dept Pediat, Jaffe Food Allergy Inst, New York, NY 10029 USA
[5] Kings Coll London, Sch Med, Dept Publ Hlth Sci, London WC2R 2LS, England
[6] Univ Dundee, Coll Life Sci, Ctr Dermatol & Genet Med, Dundee, Scotland
[7] Univ Dundee, Coll Med Dent & Nursing, Dundee, Scotland
[8] Johns Hopkins Univ, Sch Med, Dept Pediat, Div Allergy & Immunol, Baltimore, MD 21205 USA
[9] Lund Univ, Dept Pediat, Lund, Sweden
[10] Lund Univ, Dept Clin Immunol, Inst Lab Med, S-22101 Lund, Sweden
[11] Univ Arkansas Med Sci, Little Rock, AR 72205 USA
[12] Arkansas Childrens Hosp, Little Rock, AR 72202 USA
[13] Univ N Carolina, Dept Pediat, Chapel Hill, NC USA
[14] EMMES Corp, Rockville, MD USA