About the Authors
- Luís Alves
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* E-mail: lalves@med.up.pt
Affiliations Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal, Institute of Public Health - University of Porto (ISPUP), Porto, Portugal, Santo André de Canidelo Health Family Unit, Vila Nova de Gaia, Portugal
- Ana Azevedo
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Affiliations Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal, Institute of Public Health - University of Porto (ISPUP), Porto, Portugal
- Susana Silva
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Affiliations Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal, Institute of Public Health - University of Porto (ISPUP), Porto, Portugal
- Henrique Barros
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Affiliations Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal, Institute of Public Health - University of Porto (ISPUP), Porto, Portugal
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: AA HB. Performed the experiments: LA AA. Analyzed the data: LA AA. Contributed reagents/materials/analysis tools: AA HB. Wrote the paper: LA AA SS. Classified occupations: LA SS. Interpreted the data and revised the manuscript for important intellectual content: LA AA SS HB.