共 24 条
[2]
Bonar J, 1966, J Obstet Gynaecol Br Commonw, V73, P418
[3]
Brown J J, 1966, J Obstet Gynaecol Br Commonw, V73, P410
[4]
BROWNE FJ, 1946, J OBSTET GYN BRIT EM, V53, P510
[6]
CONN JW, 1964, JAMA-J AM MED ASSOC, V190, P213
[8]
EASTMAN NJ, 1966, WILLIAMS OBSTETRICS, P736
[9]
FITZ AE, 1965, CLIN RES, V13, P206
[10]
GENEST J, 1961, CAN MED ASSOC J, V84, P403