About the Authors
Molecular Biotechnology Center, Department of Genetics, Biology and Biochemistry, University of Turin, Turin, Italy
Department of Human Genetics and Centre for Molecular and Biomolecular Informatics, University Medical Centre Nijmegen, Nijmegen, The Netherlands
The authors have declared that no competing interests exist.
Conceived and designed the experiments: UA RMP PP FDC. Analyzed the data: UA RMP. Contributed reagents/materials/analysis tools: EG CD LS MO. Wrote the paper: PP FDC.