Abstract (1346) | Core Tip (1752) | Full Article (HTML) (3953) | Tables (1-4) (528) | Full Article (PDF)-1000K (623) | Received: 03/07/2013 | Revised: 04/04/2013 | Accepted: 04/17/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (7) | Total Visits (10968) | Similar Articles (0) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1469) | Core Tip (1265) | Full Article (HTML) (6559) | Full Article (PDF)-540K (662) | Received: 02/20/2013 | Revised: 03/28/2013 | Accepted: 04/29/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (13) | Total Visits (13177) | Similar Articles (225) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1319) | Core Tip (1228) | Full Article (HTML) (3536) | Tables (1-2) (559) | Full Article (PDF)-720K (425) | Received: 02/14/2013 | Accepted: 04/16/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (11) | Total Visits (9837) | Similar Articles (13) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1423) | Core Tip (1328) | Full Article (HTML) (4151) | Figures (1-1) (1019) | Tables (1-4) (984) | Full Article (PDF)-770K (437) | Received: 02/21/2013 | Revised: 03/20/2013 | Accepted: 04/10/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (8) | Total Visits (11972) | Similar Articles (5) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open