Tsai HI, Chou AH, Yang MW. Ata Anaesthesiol Taiwan. 2012 Sep;50(3):96-100. doi: 10.1016/ j.aat.2012.08.005. Epub 2012 Sep 6.
Departamento de Anestesiologia, Chang Gung Memorial Hospital, Faculdade de Medicina, Chang Gung University, Taoyuan, Taiwan, ROC.