共 9 条
[2]
*AM AC PED, 2000, REP COMM INF DIS, P148
[3]
*CDC, IN PRESS MMWR
[7]
JOHNSON DE, 1992, JAMA-J AM MED ASSOC, V268, P446
[8]
NAZER H, 1993, BRIT J CLIN PRACT, V47, P76