1. Biostatistics and Data Management Regeneron Pharmaceuticals Basking Ridge New Jersey USA
2. Department of Mathematics and Statistics University of Maryland Baltimore Maryland USA
3. Department of Epidemiology and Public Health University of Maryland School of Medicine Baltimore Maryland USA
4. Institute for Genome Science University of Maryland School of Medicine Baltimore Maryland USA
5. Department of Physical Therapy and Rehabilitation Science University of Maryland School of Medicine Baltimore Maryland USA
6. Department of Neurosurgery University of Maryland School of Medicine Baltimore Maryland USA
7. Institute for Health Computing University of Maryland School of Medicine University of Maryland Bethesda Maryland USA