A randomised crossover comparison of patient-controlled sedation and patient-maintained sedation using propofol - Rodrigo, M. R. C.; Irwin, M. G.; Tong, C. K. A.; Yan, S. Y. (Blackwell Science Ltd, 2003)
http://dx.doi.org/10.1046/j.1365-2044.2003.03081.x
Keywords: WW-YZ