Corresponding author:
Claude LAMBERT (claude.lambert@chu-st-etienne.fr)
Laboratoire d’Immunologie clinique, pôle de Biologie, Hôpital Nord, CHU
Saint-Étienne
42055 Saint-Etienne Cedex 2 FRANCE
Tel: +33 477120513; Fax: +33 477120552
Research supported by Immunology laboratory / University
Hospital Saint-Etienne, FRANCE,