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Abstract (1997) | Core Tip (1307) | Full Article (HTML) (4749) | Tables (1-2) (884) | Full Article (PDF)-1062K (622) | Audio-394K (23) | Peer-Review Report-109K (281) | Answering Reviewers-311K (265) | Received: 05/14/2015 | Accepted: 06/16/2016 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (4) | Total Visits (15256) | Similar Articles (620) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

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