[1] Univ Michigan, Michigan Med, Dept Internal Med, Div Allergy & Clin Immunol, Ann Arbor, MI USA
[2] Univ Michigan, Michigan Med, Mary H Weiser Food Allergy Ctr, Ann Arbor, MI USA
[3] Univ Michigan, Michigan Med, Dept Dermatol, 6427C Med Sci Bldg I,1301 E Catherine St, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Michigan Med, Dept Pathol, Ann Arbor, MI USA
[5] Univ Hosp Schleswig Holstein, Dept Dermatol Venereol & Allergol, Kiel, Germany