A higher incidence of grade II however, not of grade III or IV severe GVHD after double-unit transplantation offers been reported previously.29 In this analysis, the chance of relapse was similar in the two treatment groups. Despite an increased incidence of GVHD, a sophisticated graft-versus-leukemia effect was not observed after double-device transplantation in our study, a finding that is in contrast to that in some studies performed at solitary centers or described in registry reviews.26-28,30,31 If the outcome in this research in comparison with others reflects differences in disease or disease risk , younger patient age, or another factors or element that might be present in nonrandomized trials, remains unknown.What you need is a particular cleanser that would get rid of oil from your face, preventing acne from appearing. Salicylic acid nicely does that very. A facial cleanser which has 2 % of salicylic acid can prevent pimples. Not only it’ll remove oil and bacteria, but it will clean your skin layer from dead sells also, dust and other residue that may clog pores and trigger acne. Salicylic acid can be used to cure acne as well as prevent it. For pimples prevention you don’t need to use it daily, 2-3 times weekly will do. 2. Make use of facial scrubs for preventing acne Using gentle facial scrub regularly is vital that you prevent acne also.