About the Authors
Global Health Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
Swiss Institute of Bioinformatics, Lausanne, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: BB JMC RH CS FP STC. Performed the experiments: BB JMC RH CS. Analyzed the data: BB JMC RH CS SU JR FP STC. Wrote the paper: BB STC.