About the Authors

Stina Enqvist

Affiliation Department of Genetics and Pathology, Uppsala University, Uppsala, Sweden

Knut Sletten

Affiliation Biotechnology Centre of Oslo, University of Oslo, Oslo, Norway

Fred J. Stevens

Affiliation Biosciences Division, Argonne National Laboratory, Argonne, Illinois, United States of America

Ulf Hellman

Affiliation Ludwig Institute for Cancer Research, Uppsala, Sweden

Per Westermark

To whom correspondence should be addressed. E-mail: Per.Westermark@genpat.uu.se

Affiliation Department of Genetics and Pathology, Uppsala University, Uppsala, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PW SE. Performed the experiments: SE KS UH. Analyzed the data: PW KS FS UH. Contributed reagents/materials/analysis tools: PW. Wrote the paper: PW SE.