共 15 条
[1]
BURDICK JS, 1992, AM J GASTROENTEROL, V87, P1281
[3]
GEENEN JE, 1987, TECHNIQUES THERAPEUT, V6
[6]
KAHN HA, 1989, STATISTICAL METHODS
[8]
LAMMER J, 1990, RADIOL CLIN N AM, V28, P1211