共 5 条
[1]
ANDERSON KJ, 1977, NURSING TIMES, V8, P1923
[2]
DODDS D T, 1961, S Afr Med J, V35, P53
[3]
KNUTSEN K., 1951, ACTA OBSTET ET GYNECOL SCAND, V31, P9
[4]
MCLAREN HC, 1941, J OBSTETRICS GYNECOL, P1
[5]
Newton N, 1976, Prim Care, V3, P781