Participation as commodity, participation as gift.
Chambers
T
T
Northwestern University Medical School, USA.
D000328:Adult; D002986:Clinical Trials as Topic / Q000191:economics; D004467:Economics; D005249:Fees and Charges; D037921:Gift Giving; D006805:Human Experimentation / Q000191:economics; D006801:Humans; D007398:Interpersonal Relations; D035842:Research Subjects; D035844:Researcher-Subject Relations; D012941:Social Responsibility