Students in the third cycle of medical, odontology and pharmacy studies who are presidents of local associations and unions affiliated to the trade union organisations mentioned in Article R. 6153-24-1 may, with the authorisation of the competent director general of the regional health agency, complete their training period in excess of their normal number under the conditions provided for, as appropriate, in I de l’article R. 632-33 du code de l’éducation or au II des articles D. 633-16 et R. 634-15-1 du même code.