About the Authors

David P. de Sena

Affiliation Postgraduate Program in Health Sciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil

Daniela D. Fabricio

Affiliation Department of Otorhinolaryngology, Hospital Sao Lucas, PUCRS, Porto Alegre, Brazil

Maria Helena I. Lopes

Affiliation Department of Internal Medicine, Faculdade de Medicina, PUCRS, Porto Alegre, Brazil

Vinicius D. da Silva

vinids@pucrs.br

Affiliation Department of Pathology and Radiation, Faculdade de Medicina, PUCRS, Porto Alegre, Brazil

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DPS DDF MHIL VDS. Performed the experiments: DPS DDF VDS. Analyzed the data: DPS DDF MHIL VDS. Contributed reagents/materials/analysis tools: DPS MHIL VDS. Wrote the paper: DPS VDS.