About the Authors

María Hortal

marujahortal@gmail.com

Affiliation Basic Sciences Development, National University, Montevideo, Uruguay

Miguel Estevan

Affiliation Radiology Department, Children's Hospital, Ministry of Health, Montevideo, Uruguay

Miguel Meny

Affiliation Statistics Department, Montevideo Municipality, Uruguay

Inés Iraola

Affiliation Pediatric Department, Social Security, Montevideo, Uruguay

Hilda Laurani

Affiliation Immunization Department, CHLAP, Montevideo, Uruguay

Competing Interests

I have read the journal's policy and have the following competing interests because this research was supported by an unrestricted grant from Pfizer Inc. We confirm this grant does not alter our adherence to PLOS ONE policies on sharing data and material.

Author Contributions

Conceived and designed the experiments: MH ME MM II HL. Performed the experiments: MH ME MM II HL. Analyzed the data: MH ME MM II HL. Contributed reagents/materials/analysis tools: MH ME MM II HL. Wrote the paper: MH ME MM II HL.