The reliability and validity of simplified COMFORT scale in assessment of sedation levels in children on mechanical ventilation 
FENG Yuguang, SUN Liping, WANG Zhuheng, LI Yuwei, GUO Qinghua, ZHOU Guanhua
Journal of Clinical Pediatrics . 2014, (12): 1158 - .  DOI: 10.3969 j.issn.1000-3606.2014.12.015