About the Authors
BASF SE, Global Research Herbicides, Ludwigshafen, Germany
Swiss Tropical and Public Health Institute, Basel, Switzerland
University of Basel, Basel, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MW MR MK RB. Performed the experiments: MR MK. Analyzed the data: MW MR MK RB. Wrote the paper: MW MR MK RB.