- Waste anaesthetic gases induce sister chromatid exchanges in lymphocytes of operating room personnel. Hoerauf, K.H., Wiesner, G., Schroegendorfer, K.F., Jobst, B.P., Spacek, A., Harth, M., Sator-Katzenschlager, S., Rüdiger, H.W. British journal of anaesthesia. (1999)