共 24 条
- [4] AMBROSE J, 1976, LANCET, V1, P847
- [5] ARMITAGE P, 1971, STATISTICAL METHODS
- [7] BAKER HL, 1974, MAYO CLIN PROC, V49, P17
- [8] GAWLER J, 1975, BRIT J RADIOL, V48, P606
- [9] GAWLER J, 1974, LANCET, V2, P419
- [10] HIATT H, 1975, N ENGL J MED, V293, P245