共 7 条
[2]
MARKS JS, 1978, PEDIATRICS, V62, P955
[4]
1982, HOSP INFECTION CONTR, V9, P133
[5]
1982, MMWR, V31, P217
[6]
1983, MMWR, V32, P401
[7]
1982, MMWR, V31, P229