Luckraz H, Manga N, Senanayake EL, Abdelaziz M, Gopal S, Charman SC, Giri R, Oppong R, Andronis L. Cost of treating ventilator-associated pneumonia post cardiac surgery in the National Health Service: results from a propensity-matched cohort study. J Intensive Care Soc. 2018 May;19(2):94-100. doi: 10.1177/1751143717740804
Pring CM, Skelding-Millar L, Goodall RJ. Expectant treatment or cholecystectomy after endoscopic retrograde cholangiopancreatography for choledocholithiasis in patients over 80 years old? Surg Endosc. 2005 Mar;19(3):357-60.