共 10 条
[1]
Essex B J, 1977, Trop Doct, V7, P134
[3]
GREENBERG R, 1982, AM J OBSTET GYNECOL, V145, P797
[4]
HALL MH, 1980, LANCET, V2, P78
[5]
HELLIGER FJ, 1985, J HLTH TECHNOL ASSES, V1, P934
[6]
LILJESTRAND J, 1985, UPS DISS FACULTY MED, V524, P5
[7]
MOLLER B, 1988, COMPR SUMM UPS DISS, V177, P4
[8]
RYAN GM, 1980, AM J OBSTET GYNECOL, V137, P876
[9]
VANROOSMALEN J, 1988, MATERNITY CARE SO HI
[10]
WALTHER FJ, 1980, TROP GEOGR MED, V32, P336