Cette dernière situation constitue la plus grande source des mises en demeure, avis motivés et saisines en 2001, décelés soit à la suite de plaintes (la majorité des cas), soit ex-officio.
Cases of the latter gave rise to the largest number of letters of formal notice, reasoned opinions and referrals in 2001, and were identified following complaints (in most cases), or on the Commission's own initiative.