The programmes or actions defined in articles L. 1161-2 and L. 1161-3 may not be developed or implemented by companies engaged in the exploitation of a medicinal product, persons responsible for marketing a medical device or its accessory or an in vitro diagnostic medical device or its accessory or companies offering health-related services. However, these companies and persons may take part in the actions or programmes mentioned in articles L. 1161-2 and L. 1161-3, in particular with regard to their financing, where health professionals and the associations mentioned in article L. 1114-1 draw up and implement these programmes or actions.