共 9 条
[3]
McGowan A., 1975, Biology of the Neonate, V25, P66
[4]
Nie N.H., 1975, SPSS STATISTICAL PAC
[6]
THOMSON A M, 1968, Journal of Obstetrics and Gynaecology of the British Commonwealth, V75, P903
[7]
WAGNER M, 1967, BIOL NEONATORUM, V11, P106, DOI 10.1159/000240057
[8]
WHITELAW A, 1977, LANCET, V1, P15