共 16 条
[4]
CLASSEN M, 1983, SCAND J GASTROENTERO, V18, P61
[5]
COX DR, 1972, J R STAT SOC B, V34, P187
[6]
GOUGH KR, 1984, LANCET, V2, P659
[8]
LIBESKIND M, 1983, SCAND J GASTROENTERO, V18, P69
[9]
MARKS IN, 1985, S AFR MED J, V67, P626
[10]
MARKS IN, 1984, S AFR MED J, V65, P1010