Surveillance of device-associated infection rates and mortality in 3 Greek intensive care units - Apostolopoulou, Eleni; Raftopoulos, Vasilios; Filntisis, Georgios; Kithreotis, Prokopis; Stefanidis, Evagelos; Galanis, Petros; Veldekis, Dimitrios (American Journal of Critical Care, 2013)