Imagine if just 1% of @HamillHimself 3.5 M Twitter fans donated blood to make up 4 the world-wide shortages, it would yield 4,375 gal. & save lives. Blood banks are very sterile & safe. Do it before May 4th & post here. If you can& #39;t donate, then please retweet to help. TY MTFBWY

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