About the Authors
Division of Developmental Neurobiology, Medical Research Council National Institute for Medical Research, London, United Kingdom
Department of Clinical and Experimental Medicine, Linkoping University Medical School, Linkoping, Sweden
The authors have declared that no competing interests exist.
IMA conceived and designed the experiments, performed the experiments, analyzed the data, and wrote the paper. ST conceived and designed the experiments and contributed reagents/materials/analysis tools. APG conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, and wrote the paper.