Abstract (1359) | Core Tip (1767) | Full Article (HTML) (3984) | Tables (1-4) (541) | Full Article (PDF)-1000K (632) | Received: 03/07/2013 | Revised: 04/04/2013 | Accepted: 04/17/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (7) | Total Visits (11112) | Similar Articles (0) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1485) | Core Tip (1279) | Full Article (HTML) (6579) | Full Article (PDF)-540K (669) | Received: 02/20/2013 | Revised: 03/28/2013 | Accepted: 04/29/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (13) | Total Visits (13308) | Similar Articles (229) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1334) | Core Tip (1244) | Full Article (HTML) (3555) | Tables (1-2) (573) | Full Article (PDF)-720K (433) | Received: 02/14/2013 | Accepted: 04/16/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (11) | Total Visits (9988) | Similar Articles (13) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1438) | Core Tip (1343) | Full Article (HTML) (4175) | Figures (1-1) (1031) | Tables (1-4) (997) | Full Article (PDF)-770K (443) | Received: 02/21/2013 | Revised: 03/20/2013 | Accepted: 04/10/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (8) | Total Visits (12124) | Similar Articles (5) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open