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Research Article

Estrogen Receptor Status in Relation to Risk of Contralateral Breast Cancer–A Population-Based Cohort Study

  • Maria E. C. Sandberg mail,

    Maria.Sandberg@ki.se

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Per Hall,

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Mikael Hartman,

    Affiliations: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Saw Swee Hock School of Public Health, Singapore, Singapore, Department of Surgery, National University of Singapore, Singapore, Singapore

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  • Anna L. V. Johansson,

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Sandra Eloranta,

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Alexander Ploner,

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Kamila Czene

    Affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden

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  • Published: October 08, 2012
  • DOI: 10.1371/journal.pone.0046535

About the Authors

Maria E. C. Sandberg, Per Hall, Mikael Hartman, Anna L. V. Johansson, Sandra Eloranta, Alexander Ploner, Kamila Czene
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
Mikael Hartman
Saw Swee Hock School of Public Health, Singapore, Singapore
Mikael Hartman
Department of Surgery, National University of Singapore, Singapore, Singapore

Corresponding Author

Email: Maria.Sandberg@ki.se

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MECS PH MH AP KC. Performed the experiments: MECS AJ SE. Analyzed the data: MECS PH AJ AP KC. Contributed reagents/materials/analysis tools: MECS PH. Wrote the paper: MECS PH MH AJ SE AP KC.