共 60 条
[1]
*AM COLL SURG, 1991, B AM COLL SURG, V76, P28
[2]
[Anonymous], 1988, JAMA-J AM MED ASSOC, V259, P1360
[4]
BAYER R, 1988, B NEW YORK ACAD MED, V64, P498
[7]
CDC, 2001, Morbidity and Mortality Weekly Report, V50, P1
[9]
Corley M C, 1995, Medsurg Nurs, V4, P211