Pharmacodynamic effect of gabapentin on central nervous system in patients with chronic low back pain: a [99mTc]Tc-ECD SPECT study - Papassidero, Priscila; Wichert-Ana, Lauro; Lia, Erica Negrini; Alexandre-Santos, Leonardo; Trevisan, Ana Carolina; Coelho, Eduardo Barbosa; Della Pasqua, Oscar; Lanchote, Vera Lucia; Dach, Fabiola (Regional Anesthesia & Pain Medicine, 2023)