About the Authors

Audrey V. Grant

audrey.grant@inserm.fr

Affiliations Department of Epidemiology, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland, United States of America, Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University, Baltimore, Maryland, United States of America

Maria Ilma Araujo

Affiliation Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Salvador, Bahia, Brazil

Eduardo Vieira Ponte

Affiliation Programa para o Controle da Asma e Rinite Alérgica na Bahia, Federal University of Bahia School of Medicine, Salvador, Bahia, Brazil

Ricardo Riccio Oliveira

Affiliation Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Salvador, Bahia, Brazil

Peisong Gao

Affiliation Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University, Baltimore, Maryland, United States of America

Alvaro A. Cruz

Affiliations Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Salvador, Bahia, Brazil, Programa para o Controle da Asma e Rinite Alérgica na Bahia, Federal University of Bahia School of Medicine, Salvador, Bahia, Brazil

Kathleen C. Barnes

Affiliations Department of Epidemiology, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland, United States of America, Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University, Baltimore, Maryland, United States of America

Terri H. Beaty

Affiliation Department of Epidemiology, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland, United States of America

Competing Interests

The study benefited from financial support from Glaxo-Smith-Kline. There are no patents, products in development or marketed products to declare. This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AVG MIA KCB AAC THB. Performed the experiments: AVG RRO EVP PG. Analyzed the data: AVG. Contributed reagents/materials/analysis tools: MIA AAC KCB. Wrote the paper: AVG THB.