About the Authors

Jan Karbowski

jkarbowski@mimuw.edu.pl

Affiliation Institute of Applied Mathematics and Mechanics, University of Warsaw, Warsaw, Poland

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JK. Performed the experiments: JK. Analyzed the data: JK. Contributed reagents/materials/analysis tools: JK. Wrote the paper: JK.