Synergistic effect of perineural dexamethasone and dexmedetomidine (Dex-Dex) in extending the analgesic duration of a transversus abdominis plane block - Herman, J; Urits, I; Urman, R D; Kaye, A D; Viswanath, O; Eskander, J P (J Clin Anesth, 2020)