共 42 条
[2]
Bernstein CN, 1999, AM J EPIDEMIOL, V149, P916, DOI 10.1093/oxfordjournals.aje.a009735
[3]
Chadwick N, 1998, J MED VIROL, V55, P305, DOI 10.1002/(SICI)1096-9071(199808)55:4<
[4]
305::AID-JMV9>
[5]
3.0.CO
[6]
2-4