Assessing the applicability of scoring systems for predicting postoperative nausea and vomiting - Van Den Bosch, J. E.; Kalkman, C. J.; Vergouwe, Y.; Van Klei, W. A.; Bonsel, G. J.; Grobbee, D. E.; Moons, K. G. M. (Blackwell Science Ltd, 2005)
http://dx.doi.org/10.1111/j.1365-2044.2005.04121.x
Keywords: WW-YZ