Lewis, K., Seale, L., Bartle, I. E., Watkins, A., & Ebden, P. (2004). Early Predictors of CPAP Use for the Treatment of Obstructive Sleep Apnea. Sleep, 27(1), pp. 134-138. doi:10.1093/sleep/27.1.134

Lewis, Keir, Lisa Seale, Iona E. Bartle, Alan Watkins, and Philip Ebden. "Early Predictors of CPAP Use for the Treatment of Obstructive Sleep Apnea." Sleep 27, no. 1 (2004): 134-138.

Lewis, Keir, et al. "Early Predictors of CPAP Use for the Treatment of Obstructive Sleep Apnea." Sleep 27.1 (2004): 134-138.