共 5 条
[1]
HIBBARD ED, 1965, LANCET, V1, P1254
[2]
NELSON MM, 1960, CONGENITAL MALFORMAT
[3]
SMITHELLS RW, 1981, BRIT MED J, V282, P1793
[4]
THIERSCH JB, 1952, AM J OBSTET GYNECOL, V63, P1298
[5]
1981, BR MED J, V282, P1509