Judgment of the Court of 12 July 2001 in Case C-368/98 (reference for a preliminary ruling from the Cour du travail de Mons): Abdon Vanbraekel and Others v Alliance nationale des mutualités chrétiennes (ANMC) (Social security — Sickness insurance — Articles 22 and 36 of Regulation (EEC) No 1408/71 — Freedom to provide services — Article 59 of the EC Treaty (now, after amendment, Article 49 EC) — Hospital treatment costs incurred in another Member State — Refusal of authorisation subsequently declared unfounded)