共 23 条
[1]
[Anonymous], 1992, MMWR Recomm Rep, V41, P1
[2]
[Anonymous], 1999, MMWR Recomm Rep, V48, P1
[4]
*CDC, 2000, HIV AIDS SURVEILLANC, V12, P1
[8]
Grant AD, 1998, BRIT MED BULL, V54, P369, DOI 10.1093/oxfordjournals.bmb.a011694