共 18 条
[1]
BALLANTYNE JW, 1941, J OBSTET GYNAECOL BR, V48, P354
[2]
BRAILSFORD JF, 1942, BRIT J RADIOL, V15, P213
[3]
Currie D, 1934, Proc R Soc Med, V27, P1499
[4]
GARRY TP, 1952, J OBSTET GYN BRIT EM, V59, P45
[8]
HOLM HH, 1936, MINN MED, V19, P740
[9]
HUNTER EF, 1941, J OBSTET GYNAECOL BR, V48, P251
[10]
LEACHMAN RD, 1967, NATIONAL F BIRTH DEF, V3