Reynolds JW, Henshaw DS, Jaffe JD, Dobson SW, Edwards CJ, Turner JD, Weller RS, Graves BR, Freehill MT. Analgesic Benefit of Pectoral Nerve Block II Blockade for Open Subpectoral Biceps Tenodesis: A Randomized, Prospective, Double-Blinded, Controlled Trial. Anesth Analg. 2019 08; 129(2):536-542.