HEA L TH E FF E CTS I N STI T U T E Biomarkers in Czech Workers Exposed to 1,3-Butadiene: A Transitional Epidemiologic Study Richard J Albertini, Radim J Šrám, Pamela M Vacek, Jeremiah Lynch, Janice A Nicklas, Nico J van Sittert, Peter J Boogaard, Rogene F Henderson, James A Swenberg, Ad D Tates, Jonathan B Ward Jr, Michael Wright, and Others Number 116 June 2003 RESEARCH REPORT Includes a Commentary by the Institute’s Health Review Committee