共 62 条
[1]
*AMN INT, 1993, 630193 AMN INT
[2]
[Anonymous], 1995, Lancet, V345, P339
[3]
[Anonymous], 1986, B WORLD HEALTH ORGAN, V64, P929
[5]
BOSS LP, 1994, JAMA-J AM MED ASSOC, V272, P371, DOI 10.1001/jama.272.5.371
[7]
*CDCP, 1992, MMWR-MORBID MORTAL W, V41, P9
[8]
*CDCP, 1990, MMWR-MORBID MORTAL W, V33, P1
[9]
*CDCP, 1991, MMWR-MORBID MORTAL W, V40, P443
[10]
*CDCP, 1993, MMWR-MORBID MORTAL W, V42, P304