1. Butler JK (1978) Is it ethical to conduct volunteer studies within the pharmaceutical industry? Lancet I: 816–818
2. Cardon PV, Dommel FW, Trumble RR (1976) Injuries to research subjects. N Engl J Med 295: 650–654
3. Chaput de Saintonge DM, Crane GJ, Rust ND, Karadia S, Whittam LR (1988) Modelling determinants of expected rewards in healthy volunteers. Pharmaceut Med 3: 45–54
4. Darragh A, Kenney M, Lambe R and Brick I (1986) Sudden death of a volunteer. Lancet II: 93–94
5. Demarez JP, Plat Y, Laborde P, Albin H (1988) Essai clinique et consentement éclairé. Acceptabilité chez le malade français hospitalisé. Therapie 43: 1–4