About the Authors

Christel Kamp
Biostatistics, Paul-Ehrlich-Institut, Federal Institute for Vaccines and Biomedicines, Langen, Germany

Corresponding Author

kamch@pei.de

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CK. Performed the experiments: CK. Analyzed the data: CK. Wrote the paper: CK.