S, T., T, S., S, S., M, T. and DThe Comparative Study of Optimal Fresh Gas Flow Used in Lack-Plus and Lack’s Circuit on S, N. 2015. The Comparative Study of Optimal Fresh Gas Flow Used in Lack-Plus and Lack’s Circuit on Spontaneously Breathing Anaesthetized Adults. Srinagarind Medical Journal. 30, 5 (Oct. 2015), 66.