1. Ultrasound facilitation of brachial plexus block;Reed;Anesth Intensive care,1994
2. Ultrasound guidance improves the success rate of a perivascular brachial plexus block;Sites;Acta Anaesth Scand,2006
3. Ultrasonographic contrast media;Abramowicz;has the time come in Obstetrics and Gynecology?,2005
4. Electrophysiological effect of injectates on peripheral nerve stimulation;Tsui;Reg Anesth Pain Med,2004
5. Dextrose 5% in water;Tsui;fluid medium for maintaining electrical stimulation of peripheral nerves during stimulating catheter placement,2005