Student Research Committee, Faculty of Medicine (Drs Ghasemi Nour and Akhavan Rezayat and Mss Heidari, Amini Noghondar, Ghadiri Hakim, and Emrani), Allergy Research Center (Dr Ahanchian); and Department of Pediatrics, Faculty of Medicine (Dr Ahanchian), Mashhad University of Medical Sciences, Mashhad, Iran.

Correspondence: Hamid Ahanchian, MD, Department of Pediatric Allergy and Immunology, Akbar Hospital, Mashhad University of Medical Sciences, Mashhad, Razavi Khorasan Province, Iran, 91778 99191 ([email protected]).

Mohammad Ghasemi Nour and Masoumeh Heidari contributed equally to this work.

The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.

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