About the Authors
- Juan A. Crespo
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* E-mail: juan.crespo@uam.es
Affiliation Departamento de Economía Cuantitativa, Universidad Autónoma de Madrid, Madrid, Spain
- Ignacio Ortuño-Ortín
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Affiliation Departamento de Economía, Universidad Carlos III de Madrid, Madrid, Spain
- Javier Ruiz-Castillo
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Affiliation Departamento de Economía, Universidad Carlos III de Madrid, Madrid, Spain
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JAC IO-O JR-C. Performed the experiments: JAC IO-O JR-C. Analyzed the data: JAC IO-O JR-C. Contributed reagents/materials/analysis tools: JAC IO-O JR-C. Wrote the paper: JAC IO-O JR-C.