Affiliations:
The Centre for Postgraduate Medical Education (MCPE),
ul. Marymoncka 99, 02-813 Warsaw, Poland,
tel.: +(48) 22-834-6847, fax: +(48) 22-834-0470
The Laboratory of Molecular Medical Biology of BioTe21
ul. Królowej Jadwigi 33/3b, 30-209 Cracow, Poland,