1. An evaluation of the infraclavicular block via a modified approach of the Raj technique;Borgeat;Anesth Analg,2001
2. Coracoid block—a safe and easy technique;Whiffler;Br J Anaesth,1981
3. Evaluation of brachial plexus anesthesia for upper extremity surgery;Urban;Reg Anesth,1994
4. Ultrasonographic study of the spread of local anaesthetic during axillary brachial plexus block;Ting;Br J Anaesth,1989
5. Ultrasound imaging aids infraclavicular brachial plexus block;Wu;Acta Anaesthesiol Sin,1993