9Jonsdottir RB,Kristjansdottir G. The sensitivity of the premature infant pain profile-PIPP to measure pain in hospitalized neonates[J]. J Eval Clin Pract, 2005,11 (6) : 598-605.
10Kolcaba KY. The art of comfort care[J]. Image J Nurs Sch, 1995,27(4) : 287-289.