共 20 条
[11]
LUND B, 1978, LANCET, V2, P731
[14]
NACHTIGALL LE, 1979, OBSTET GYNECOL, V53, P277
[15]
NORDIN BEC, 1978, LANCET, V2, P1259
[16]
NORDIN BEC, 1980, BRIT MED J, V1, P451
[20]
[No title captured]