共 12 条
[2]
Cruz Fierro C M, 1982, Rev Gastroenterol Mex, V47, P31
[5]
Landa L, 1976, GAC MED MEX, V111, P108
[6]
LILLESAND D, 1977, ESTIMATE NUMBER MIGR
[7]
MARTIN L, 1972, REV GASTROENTEROL ME, V37, P217
[8]
Mazzur S, 1980, Bull Pan Am Health Organ, V14, P44
[9]
Sepulveda B, 1971, Gac Med Mex, V102, P615
[10]
STEVENS CE, 1987, ANN INTERN MED, P412