共 23 条
[1]
BUDETTI P, 1981, IMPLICATIONS COST EF
[2]
BUTTERFIELD LJ, 1977, SEMIN PERINATOL, V1, P217
[3]
DAVID RJ, 1983, PEDIATRICS, V71, P531
[5]
HEIN HA, 1981, PEDIATRICS, V68, P504
[6]
HOBEL CJ, 1973, AM J OBSTET GYNECOL, V117, P1
[7]
HORWOOD SP, 1982, PEDIATRICS, V69, P613
[8]
KITCHEN WH, 1971, PEDIATRICS, V48, P711