This case-control study reports the results of the simultaneous
determination of ZON, a-ZOL, b-ZOL, a-ZAL, b-ZAL and ZAN in urine
from Tunisian women.
Among the studied compounds, a-ZAL was
the only chemical detected in a large enough sample size to perform
statistical analyses to determine the association between exposure
to this chemical and the development of breast cancer.