1. Rudjer Bošković Institute, Department of Physical Chemistry, Bijenićka cesta 54, 10002 Zagreb, Croatia, Fax: (internat.) +385‐1‐4680‐245
2. Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P. O. Box 291, 10001 Zagreb, Croatia, Fax: (internat.) +385‐1‐4673‐303