Cook, D. J., Griffith, L. E., Walter, S. D., Guyatt, G. H., Meade, M. O., Heyland, D. K., . . . Tryba, M. (2001). The attributable mortality and length of intensive care unit stay of clinically important gastrointestinal bleeding in critically ill patients. BioMed Central.

Cook, Deborah J., Lauren E. Griffith, Stephen D. Walter, Gordon H. Guyatt, Maureen O. Meade, Daren K. Heyland, Ann Kirby, ja Michael Tryba. The Attributable Mortality and Length of Intensive Care Unit Stay of Clinically Important Gastrointestinal Bleeding in Critically Ill Patients. BioMed Central, 2001.

Cook, Deborah J., et al. The Attributable Mortality and Length of Intensive Care Unit Stay of Clinically Important Gastrointestinal Bleeding in Critically Ill Patients. BioMed Central, 2001.