共 9 条
[2]
CARPENTER RC, 1965, SUDDEN DEATH TWINS
[3]
DAVIES R, 1972, BIRTH 7
[4]
FREDERICK J, 1974, BRIT J PREV SOC MED, V28, P93
[5]
FROGGATT P, 1971, BRIT J PREV SOC MED, V25, P119
[6]
MORRIS JN, 1955, LANCET, V1, P343
[7]
WYNN M, 1974, RIGHT EVERY CHILD HL
[8]
WYNN M, 1974, PROTECTION MATERNITY
[9]
1976, BRIT MEDICAL J, V2, P773