共 14 条
[1]
ALBERMAN E, 1977, EPIDEMIOLOGY PREMATU, P145
[2]
BAKKETEIG LS, 1981, PRETERM LABOR, P17
[4]
BUTLER RN, 1963, PERINATAL MORTALITY, V1
[5]
CHAMBERLAIN R, 1975, BRITISH BIRTHS 1970, P48
[6]
ENKIN M, 1982, EFFECTIVENESS SATISF, P190
[7]
GARN SM, 1977, EPIDEMIOLOGY PREMATU, P127
[9]
OAKLEY A, 1982, DISEASE ENV
[10]
PAPIERNIK E, 1969, PRESSE MED, V77, P793