Buffered lidocaine 1%/epinephrine 1:100,000 with sodium bicarbonate (sodium hydrogen carbonate) in a 3:1 ratio is less painful than a 9:1 ratio: a double-blind, randomized, placebo-controlled, crossover trial - Vent, A; Surber, C; Graf Johansen, N T (J Am Acad Dermatol, 2020)