1. Accorsi A, Barbieri A, Raffi GB, Violante FS (2001) Biomonitoring of exposure to nitrous oxide, sevoflurane, isoflurane and halothane by automated GC/MS headspace urinalysis. Int Arch Occup Environ Health 74:541?548
2. Accorsi A, Valenti S, Barbieri A, Raffi GB, Violante FS (2003) Proposal for single and mixture biological exposure limits for sevoflurane and nitrous oxide al low occupational exposure levels. Int Arch Occup Environ Health 76:129?136
3. Alessio A, Zadra P, Negri S, Maestri L, Imberti R, Ghittori S, Imbriani M, Cavalleri A (2003) Biological monitoring of occupational exposure to desflurane. G Ital Med Lav Ergon 25:137?141
4. American Conference of Governmental Industrial Hygienists (ACGIH) (1977) TLVs and BEIs based on the documentation of the threshold limit values for the chemical substances and physical agents and biological exposure indices. Cincinnati
5. American Conference of Governmental Industrial Hygienists (ACGIH) (2003) TLVs and BEIs based on the documentation of the threshold limit values for the chemical substances and physical agents and biological exposure indices. Cincinnati