Bambi, Stefano Pain assessment scales in nonverbal critically ill adult patients: ventilator-related issues. [electronic resource] - Critical care nurse Feb 2014 - 14-5 p. digital Publication Type: Letter; Comment ISSN: 1940-8250 Standard No.: 10.4037/ccn2014610 doi Subjects--Topical Terms: Critical Illness--nursingHumansPain Measurement--instrumentation