Persons performing the techniques referred to in articles R. 1311-1 and R. 1311-6 shall inform their customers, before they undergo these techniques, of the risks to which they are exposed and, after these techniques have been performed, of the precautions to be taken. This information is visibly displayed in the premises where these techniques are performed and is given to customers in writing. The content of this information is set by order of the Minister of Health.