The nurse must not accept a mission of expertise in which his own interests are at stake, or those of one of his patients, one of his relatives, one of his friends or a group which usually calls upon his services, or if his independence is affected in any way whatsoever.
No one may be both expert nurse and treating nurse for the same patient.
When entrusted with a mission, the expert nurse must recuse himself if he considers that the questions put to him are foreign to nursing technique, to his knowledge, to his possibilities or that they would expose him to contravene the provisions of the present code.