1. Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA.
2. Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado, USA.
3. Department of Biostatistics and Informatics, Colorado School of Public Health, Aurora, Colorado, USA.
4. Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado, USA.
5. Department of Neurological Surgery, The Ohio State University, Columbus, Ohio, USA.
6. Rocky Mountain Poisson and Drug Center, Denver Health, Denver, Colorado, USA.