Multicenter Study

End-of-life decisions in Greek intensive care units: a multicenter cohort study.

Crit Care. 2010 Jan 1;14(6):R228.
Multicenter Study

Withdrawing and withholding life support in the intensive care unit: a Spanish prospective multi-centre observational study.

Intensive Care Med. 2001 Nov 1;27(11):1744-9.
Multicenter Study

End-of-life practices in European intensive care units: the Ethicus Study.

JAMA. 2003 Aug 13;290(6):790-7.