title: Variability--the spice of life?
authors.forename: Richard
authors.initials: R
authors.lastname: Branson
authors.forename: Dean R
authors.initials: DR
authors.lastname: Hess
mesh_terms: D005260:Female; D006801:Humans; D007362:Intensive Care Units / Q000706:statistics & numerical data*; D008297:Male; D011175:Positive-Pressure Respiration / Q000379:methods*; D012119:Respiration; D015300:Ventilator Weaning / Q000379:methods*