Empty Handoff

http://www.medworm.com/index.php?rid=15241286&cid=c_64_27_f&fid=34392&url=http%3A%2F%2Fwww.aornjournal.org%2Farticle%2FS0001-2092%2814%2900004-0%2Fabstract%3Frss%3Dyes

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