Comparative evaluation of interscalene and interscalene plus infraclavicular brachial plexus block for elbow surgery using nerve stimulator - Gupta, Bikram Kumar; Yadav, Ghanshyam; Kumar, Neeraj; Mhaske, Vanita; Babu, Sarvana; Gautam, Gyanendra Singh (Anaesthesia, Pain & Intensive Care, 2019)