hi,my brother 47 yrs had a gi bleed,he is diabetic on oral meds and having low platelets,the reason for which is unknown.we did bone marrow and other tests and it is normal.he had a tooth infection last week and was on two course of antibiotics,he was alcoholic as well,now the dr says he may need a liver banding ,how does it helps,should we go for that,what are its complications