共 14 条
[1]
BERG NO, 1970, GASTROENTEROLOGY, V59, P575
[6]
DISSANAYAKE AS, 1974, Q J MED, V43, P161
[8]
MACDONALD WC, 1964, GASTROENTEROLOGY, V47, P573
[10]
PENA AS, 1972, Q J MED, V41, P457