2Laskin R S. An oxidized Zr ceramic surfaced femoral compo- nent for total knee arthroplasty[J]. Clin Orthop Relat Res, 2003(416) :191-196.
3Gibbins S, Stevens B. Mechanisms of sucrose and non- nutritive sucking in procedural pain management in in- fants[J]. Pain Res Manag, 2001,6 (1) : 21-28.