A Prospective, Randomized, Controlled Trial Comparing Ultrasound Versus Nerve Stimulator Guidance for Interscalene Block for Ambulatory Shoulder Surgery for Postoperative Neurological Symptoms

S. S Liu, V. M Zayas, M. A Gordon, J. C Beathe, D. B Maalouf, L Paroli, G. A Liguori, J Ortiz, V Buschiazzo, J Ngeow, T Shetty and J. T. Ya Deau

Anesthesia & Analgesia 109 ( 1 ): 265 - 271 , 2009