1. Stanton M Rutherford M The High Concentration of U.S. Health Care Expenditures http://www.ahrq.gov/research/ria19/expendria.pdf
2. National Institutes of Health ClinicalTrials.gov Homepage http://www.clinicaltrials.gov
3. National Institutes of Health Research Portfolio Online Reporting Tool (RePORT) http://projectreporter.nih.gov/reporter.cfm
4. Neurological Emergencies Treatment Trials (NETT) Network http://www.nett.umich.edu/nett/welcome
5. Resuscitation Outcomes Consortium (ROC) Homepage https://roc.uwctc.org/