Abstract (1328) | Core Tip (1732) | Full Article (HTML) (3918) | Tables (1-4) (510) | Full Article (PDF)-1000K (617) | Received: 03/07/2013 | Revised: 04/04/2013 | Accepted: 04/17/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (7) | Total Visits (10771) | Similar Articles (0) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1450) | Core Tip (1243) | Full Article (HTML) (6532) | Full Article (PDF)-540K (652) | Received: 02/20/2013 | Revised: 03/28/2013 | Accepted: 04/29/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (13) | Total Visits (12993) | Similar Articles (218) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1295) | Core Tip (1209) | Full Article (HTML) (3510) | Tables (1-2) (539) | Full Article (PDF)-720K (415) | Received: 02/14/2013 | Accepted: 04/16/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (10) | Total Visits (9610) | Similar Articles (11) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1393) | Core Tip (1305) | Full Article (HTML) (4102) | Figures (1-1) (1000) | Tables (1-4) (964) | Full Article (PDF)-770K (425) | Received: 02/21/2013 | Revised: 03/20/2013 | Accepted: 04/10/2013 | RCA | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (8) | Total Visits (11698) | Similar Articles (5) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open