title: Financial incentives for research participation: empirical questions, available answers and the burden of further proof.
authors.affiliation: Department of Medicine, Center for Bioethics, Leonard Davis Institute of Health Economics Center for Health Incentives, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6021, USA. shalpern@exchange.upenn.edu
authors.forename: Scott D
authors.initials: SD
authors.lastname: Halpern
mesh_terms: D026688:Bioethical Issues; D006805:Human Experimentation / Q000941:ethics; D006801:Humans; D009042:Motivation / Q000941:ethics*; D010358:Patient Participation / Q000191:economics; D012106:Research / Q000191:economics