1. World Health Organisation. Hepatitis B (fact sheet no. 204). www.who.int/entity/mediacentre/factsheets/fs204/en/ [revised August 2008].
2. Czarkowski M, Cielebak E, Kondej B, Staszewska E. Infectious diseases and poisonings in Poland in 2008. Natl Inst Public Health Bull. http://www.pzh.gov.pl/oldpage/epimeld/2008/Ch_2008.pdf.
3. Risk and management of blood-borne infections in health care workers;Beltrami;Clin Microbiol Rev,2000
4. Epidemiological analysis of infectious diseases identified as occupational diseases in Poland, 1998–2002;Pepłońska;Med Pr,2003
5. Occupational diseases in Poland, 2008;Wilczyńska;Med Pr,2009