Rahangdale R, Kendall MC, McCarthy RJ, Tureanu L, Doty R, Weingart A, De Oliveira GS. The effects of perineural versus intravenous dexamethasone on sciatic nerve blockade outcomes: a randomized, double-blind, placebo-controlled study. Anesth Analg. 2014 May; 118(5):1113-9.