1. Allergy and Clinical Immunology Laboratory, Department of Dermatology, Faculty of Medicine, Sao Paulo University, Sao Paulo, Brazil; Retrovirus Laboratory, Virology Service Institut Adolfo Lutz, Sao Paulo, Brazil
2. Allergy and Clinical Immunology Laboratory, Department of Dermatology, Faculty of Medicine, Sao Paulo University, Sao Paulo, Brazil
3. Department Preventive Medicine, Faculty of Medicine, Sao Paulo University, Sao Paulo, Brazil