TY  - RPRT
TI  - Pain evaluation in the intensive care unit: observer-reported faces scale compared with self-reported visual analog scale.
AU  - T Terai
AU  - H Yukioka
AU  - A Asada
DO  - 10.1097/00115550-199823020-00006
UR  - https://pubmed.ncbi.nlm.nih.gov/9570602/
ID  - 9570602
ER  -