共 6 条
[3]
PERSSON PH, 1979, ACTA OBSTET GYN SCAN, V58, P3
[4]
OUTCOME OF TWIN BIRTH - REVIEW OF 1636 CHILDREN BORN IN TWIN BIRTH
[J].
ACTA PAEDIATRICA SCANDINAVICA,
1976, 65 (04)
:473-479
[5]
SCHULMANGALAMBOS C, 1979, ARCH OTOLARYNGOL, V105, P86
[6]
Schwartz D, 1983, METHODES STATISTIQUE