共 29 条
[2]
Ausubel F. M., 1993, CURRENT PROTOCOLS MO, V1
[3]
BONTEN M, 1996, 36 INT C ANT AG CHEM
[5]
*CDC, 1997, NAT NOS INF SURV SYS
[6]
CDC, 1993, MMWR-MORBID MORTAL W, V42, P597