41.   It has been shown that endoscopy is safe even in high risk groups if performed by a skilled practitioner.

42.   The use of a biliary endoprosthesis has been proposed as an alternative approach for patients at high risk for surgery.

43.   The use of instruments for colonic aspiration is discouraged, because of the high risk of perforation.

44.   None the less, the results suggest that a history of previous recurrence does indeed predict a high risk for subsequent recurrence.

45.   His bank manager pointed out that Tack had no business experience and as such was a high risk from the banks point of view.

46.   It has been reported that there is an association between duodenal ulcer and PGA phenotype A.

47.   Previous studies have shown that expansion of the proliferative compartment toward the surface of the colonic gland is a common feature in subjects at high risk for colorectal cancer.

48.   The heterogeneity of proliferative patterns found within the high risk population used for this study is not surprising.

49.   Diversity has also been reported within groups with other high risk conditions for colorectal cancer.

50.   Miners are thus a high risk group for the development of gastric cancer and gastroscopic screening could give a significant yield of early gastric cancers.