Opportunities and costs of clinical research.
D000917:Antibody Formation; D003361:Cost Allocation; D005069:Evaluation Studies as Topic; D005382:Financing, Personal; D006501:Hepatic Encephalopathy / Q000601:surgery; D006801:Humans; D007349:Insurance, Health, Reimbursement; D007354:Insurance, Major Medical / Q000191:economics; D008099:Liver / Q000276:immunology; D008107:Liver Diseases / Q000175:diagnosis / Q000601:surgery; D008115:Liver Regeneration; D016031:Liver Transplantation; D008659:Metabolic Diseases / Q000175:diagnosis / Q000601:surgery; D009316:National Institutes of Health (U.S.); D009926:Organ Preservation; D014481:United States