Lewis, K., Alam, I., Lewis, M., Lewis, K., Stephens, J., & Baxter, J. (2009). Influence of bariatric surgery on indices of cardiac autonomic control. Autonomic Neuroscience, 151(2), pp. 168-173. doi:10.1016/j.autneu.2009.08.007

Lewis, Keir, I. Alam, M.J Lewis, K.E Lewis, J.W Stephens, and J.N Baxter. "Influence of Bariatric Surgery On Indices of Cardiac Autonomic Control." Autonomic Neuroscience 151, no. 2 (2009): 168-173.

Lewis, Keir, et al. "Influence of Bariatric Surgery On Indices of Cardiac Autonomic Control." Autonomic Neuroscience 151.2 (2009): 168-173.