Rehme, A. K., Frommann, I., Peters, S., Block, V., Bludau, J., Quednow, B. B., et al. (2009). Startle cue-reactivity differentiates between light and heavy smokers. Addiction, 104(10), 1757-1764. doi:10.1111/j.1360-0443.2009.02668.x.