Information on this project can be obtained from:  International Agency for Research on Cancer  Unit of Descriptive Epidemiology  150, cours Albert Thomas  69372 Lyon Cedex 08  France  Tel:  (33) 472 73 8485  Fax: (33) 472 73 8650  Dr Eva Steliarova-Foucher, Scientist in charge  (Tel: +33 472 73 8466; Fax: +33 472 73 8650; E-mail: steliarova@iarc.fr)    ACCIS Web Master  (Tel: +33 472 73 8451; Fax: +33 472 73 8650; E-mail: dep@iarc.fr)