1 Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan.
2 Department of Allergy, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan.
3 Department of Allergy, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan. Electronic address: mebisawa@foodallergy.jp.