共 8 条
[1]
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[2]
GOLD EM, 1973, OBSTET GYNECOL, V41, P461
[3]
HEIN HA, 1975, PEDIATRICS, V55, P769
[4]
HEIN HA, 1977, SEMIN PERINATOL, V1, P241
[5]
HEIN HA, UNPUBLISHED
[6]
RUSSELL KP, 1975, AM J OBSTET GYNECOL, V121, P756
[8]
1977, FED REG 48504, V42