共 8 条
[1]
CALLANAN C, 1991, ARCH DIS CHILD-FETAL, V66, P765
[4]
Inc S. P. S. S., 1988, SPSS X USERS GUIDE
[6]
COSTS AND BENEFITS OF NEONATAL INTENSIVE-CARE
[J].
ARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION,
1988, 63 (07)
:715-718
[8]
STEWART AL, 1981, LANCET, V1, P1038