共 4 条
[1]
CHANARIN I, 1967, ACTA OBST GYNEC SCAN, V46, P44
[2]
CHISHOLM M., 1966, Journal of Obstetrics and Gynaecology of the British Commonwealth, V73, P191
[3]
HANSEN H, 1967, ACTA OBST GYNEC SCAN, V46, P27
[4]
Whalley P J, 1969, Am J Obstet Gynecol, V105, P670