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Intensive care unit - Wikipedia
Intensive Care Unit: What You Need to Know - WebMD
When a Loved One Is in the Intensive Care Unit - Verywell Health
CCU vs. ICU in a Hospital: What Are the Differences? - Healthline
Critical Care - Overview - Mayo Clinic
What is the ICU (Intensive Care Unit)? | Sutter Health
Adult ICUs - Johns Hopkins Medicine
Intensive Care Unit - Standards of Care
Critical Care - UC San Diego Health
Intensive care - NHS