30. A physician must, with respect to research subjects or their legal representative, ensure :(1) that each subject is informed of the research project’s objectives, its advantages, risks or disadvantages for the subject, the advantages provided by the usual care, if applicable, as well as the fact, as the case may be, that the physician will derive a material gain from enrolling or keeping the subject in the research projects;
(2) that free and enlightened written consent, which is revocable at all times, is obtained from each subject before he begins his participation in the research project or when there is any significant change in the research protocol.