1. Ctr Leon Berard, Lyon, France; CHU, Bordeaux, France; Ctr C Regaud, Toulouse, France; Ctr J Perrin, Clermont-Ferrand, France; Ctr P Papin, Angers, France; Ctr F Baclesse, Caen, France; Ctr O Lambret, Lille, France; CHU, Limoges, France; Inst G Roussy, Villejuif, France