About the Authors
Department of Orthopedics and Sports Medicine, University of Washington, Seattle, Washington, United States of America
Department of Statistics, University of Washington, Seattle, Washington, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: SS SDB TSR TSG. Performed the experiments: SS BJA JP DT. Analyzed the data: SS BJA JP DT. Contributed reagents/materials/analysis tools: SS BJA JP SDB TSR. Wrote the paper: SS TSR TSG.