Shanahan H, O’Donoghue R, O’Kelly P, Synnott A, O’Rourke J. Preparation of the Drager Fabius CE and Drager Zeus anaesthetic machines for patients susceptible to malignant hyperthermia. European Journal of Anaesthesiology. 2012 May;29(5):229–34. doi: 10.1097/eja.0b013e328351b521.