Correlation Between Gram Negative Bacterial Colonization, Environmental Contamination and the Development of Infections at Intensive Care Unit. - Gayed Gergawy, Eriny Gamil; El Attar, Laila Ahmed; Amine, Amira; El Moez Azzam, Nashwa Fawzy Abd (Pakistan Journal of Scientific & Industrial Research Series B: Biological Sciences, 2024)