BIGELEISEN, PE. Extraneural versus intraneural stimulation thresholds during ultrasound-guided supraclavicular block. Anesthesiology. 2009, 110, 1235-1243
CASATI, A. Effects of ultrasound guidance on the minimum effective anaesthetic volume required to block the femoral nerve. Br J Anaesth. 2007, 98, 823-827
KOSCIELNIAK-NIELSEN, ZJ. Ultrasound-guided peripheral nerve blocks : what are the benefits?. Acta Anaesthesiol Scand. 2008, 52, 727-737
CHEN, WK. The effect of anesthetic technique on survival in human cancers : a meta-analysis of retrospective and prospective studies. PLoS One. 2013, 8, e56540