Differential diagnosis of intestinal bacterial overgrowth

​Differential diagnosis of intestinal bacterial overgrowth are : 
-chronic pancreatitis 
-gastric achlorhydria 
-small intestine motility disorders such as diabetic enteropathy, scleroderma, chronic intestinal pseudo obstruction
-anatomic abnormality of small intestine with stagnation
-afferent limb of Billroth II gastrojejunostomy
-small intestine diverticula
-obstruction, blind loop, radiation enteritis