共 18 条
[3]
ELSNER P, 1957, FORTSCHR GEBURTSH GY, V6
[5]
GILLMAN T, 1959, LANCET, V2, P70
[6]
GREENHILL JP, 1955, OBSTETRICS, V11, P131
[7]
KIKUCHI I, 1962, J Jpn Obstet Gynecol Soc, V14, P287
[8]
MACFARLANE GR, 1964, LANCET, V2, P862