Abstract (662) | Core Tip (660) | Full Article (HTML) (3542) | Figures (1-1) (98) | Full Article (PDF)-901K (591) | Full Article (Word)-196K (261) | Peer-Review Report-143K (195) | Answering Reviewers-92K (185) | Received: 01/29/2015 | Revised: 04/28/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (29) | Total Visits (10168) | Similar Articles (55) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (776) | Core Tip (772) | Full Article (HTML) (3316) | Tables (1-1) (90) | Full Article (PDF)-1008K (367) | Full Article (Word)-182K (213) | Peer-Review Report-125K (268) | Answering Reviewers-56K (204) | Received: 04/05/2015 | Revised: 06/15/2015 | Accepted: 08/25/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (18) | Total Visits (9236) | Similar Articles (973) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (779) | Core Tip (767) | Full Article (HTML) (3545) | Tables (1-1) (91) | Full Article (PDF)-1007K (449) | Full Article (Word)-164K (252) | Peer-Review Report-111K (135) | Answering Reviewers-113K (149) | Received: 02/27/2015 | Revised: 04/20/2015 | Accepted: 08/25/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (33) | Total Visits (12095) | Similar Articles (1029) | Timeline of Article Publication (1) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (900) | Core Tip (868) | Full Article (HTML) (4976) | Tables (1-3) (90) | Full Article (PDF)-1208K (618) | Full Article (Word)-293K (275) | Peer-Review Report-94K (226) | Answering Reviewers-295K (585) | Received: 04/26/2015 | Revised: 06/19/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (52) | Total Visits (12618) | Similar Articles (50) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (721) | Core Tip (748) | Full Article (HTML) (7589) | Figures (1-2) (154) | Tables (1-1) (83) | Full Article (PDF)-1114K (580) | Full Article (Word)-330K (245) | Peer-Review Report-93K (168) | Answering Reviewers-77K (219) | Received: 04/27/2015 | Revised: 06/22/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (41) | Total Visits (15116) | Similar Articles (95) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (785) | Core Tip (742) | Full Article (HTML) (5981) | Figures (1-2) (93) | Tables (1-1) (92) | Full Article (PDF)-1385K (686) | Full Article (Word)-1616K (286) | Peer-Review Report-80K (156) | Answering Reviewers-261K (178) | Received: 04/28/2015 | Revised: 07/01/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (52) | Total Visits (13139) | Similar Articles (210) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (696) | Core Tip (770) | Full Article (HTML) (4951) | Figures (1-5) (167) | Tables (1-2) (79) | Full Article (PDF)-2961K (707) | Full Article (Word)-5657K (221) | Peer-Review Report-85K (182) | Answering Reviewers-82K (222) | Received: 04/28/2015 | Revised: 07/05/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (13) | Total Visits (12161) | Similar Articles (1304) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (790) | Core Tip (816) | Full Article (HTML) (5417) | Figures (1-1) (130) | Full Article (PDF)-2810K (822) | Full Article (Word)-395K (306) | Peer-Review Report-92K (199) | Answering Reviewers-7K (174) | Received: 04/23/2015 | Revised: 06/13/2015 | Accepted: 08/25/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (35) | Total Visits (14002) | Similar Articles (332) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (860) | Core Tip (847) | Full Article (HTML) (15733) | Tables (1-2) (84) | Full Article (PDF)-1056K (1793) | Full Article (Word)-203K (313) | Peer-Review Report-127K (222) | Answering Reviewers-458K (223) | Received: 03/17/2015 | Revised: 05/21/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (301) | Total Visits (25822) | Similar Articles (1517) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (761) | Core Tip (816) | Full Article (HTML) (5295) | Tables (1-4) (92) | Full Article (PDF)-1100K (864) | Full Article (Word)-315K (313) | Peer-Review Report-114K (200) | Answering Reviewers-77K (204) | Received: 03/24/2015 | Revised: 05/08/2015 | Accepted: 09/02/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (45) | Total Visits (14055) | Similar Articles (1478) | Timeline of Article Publication (1) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (773) | Core Tip (659) | Full Article (HTML) (2920) | Tables (1-1) (91) | Full Article (PDF)-999K (444) | Full Article (Word)-157K (247) | Peer-Review Report-79K (157) | Answering Reviewers-115K (190) | Received: 04/05/2015 | Revised: 06/15/2015 | Accepted: 08/25/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (5) | Total Visits (9425) | Similar Articles (1482) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (684) | Core Tip (702) | Full Article (HTML) (2936) | Tables (1-2) (93) | Full Article (PDF)-819K (493) | Full Article (Word)-144K (178) | Peer-Review Report-108K (172) | Answering Reviewers-44K (193) | Received: 04/21/2015 | Revised: 06/17/2015 | Accepted: 09/02/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (14) | Total Visits (8841) | Similar Articles (1480) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1357) | Core Tip (1508) | Full Article (HTML) (25422) | Figures (1-1) (99) | Full Article (PDF)-1096K (4612) | Full Article (Word)-230K (513) | Peer-Review Report-97K (347) | Answering Reviewers-103K (388) | Received: 03/02/2015 | Revised: 05/28/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (374) | Total Visits (40349) | Similar Articles (0) | Timeline of Article Publication (7) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1822) | Core Tip (1591) | Full Article (HTML) (18902) | Tables (1-3) (126) | Full Article (PDF)-1108K (1422) | Full Article (Word)-278K (560) | Peer-Review Report-122K (427) | Answering Reviewers-408K (407) | Received: 04/28/2015 | Revised: 06/28/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (32) | Total Visits (32216) | Similar Articles (28) | Timeline of Article Publication (1) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (843) | Core Tip (881) | Full Article (HTML) (5857) | Tables (1-1) (82) | Full Article (PDF)-979K (708) | Full Article (Word)-175K (285) | Peer-Review Report-100K (210) | Answering Reviewers-128K (221) | Received: 05/18/2015 | Revised: 07/09/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (49) | Total Visits (13964) | Similar Articles (987) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (1005) | Core Tip (911) | Full Article (HTML) (9563) | Tables (1-1) (83) | Full Article (PDF)-1049K (1039) | Full Article (Word)-208K (291) | Peer-Review Report-124K (228) | Answering Reviewers-306K (208) | Received: 02/28/2015 | Revised: 04/25/2015 | Accepted: 09/02/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (73) | Total Visits (18182) | Similar Articles (380) | Timeline of Article Publication (1) | Authors Evaluation (3) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (705) | Core Tip (651) | Full Article (HTML) (2852) | Figures (1-1) (124) | Tables (1-3) (85) | Full Article (PDF)-1005K (405) | Full Article (Word)-229K (237) | Peer-Review Report-101K (144) | Answering Reviewers-35K (178) | Received: 03/07/2015 | Revised: 05/14/2015 | Accepted: 06/16/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (11) | Total Visits (9592) | Similar Articles (384) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (718) | Core Tip (660) | Full Article (HTML) (2898) | Figures (1-2) (127) | Tables (1-1) (79) | Full Article (PDF)-1029K (412) | Full Article (Word)-219K (247) | Peer-Review Report-92K (212) | Answering Reviewers-92K (147) | Received: 02/24/2015 | Revised: 04/18/2015 | Accepted: 07/08/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (13) | Total Visits (9213) | Similar Articles (122) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (830) | Core Tip (703) | Full Article (HTML) (3287) | Figures (1-1) (97) | Tables (1-1) (79) | Full Article (PDF)-1031K (467) | Full Article (Word)-203K (264) | Peer-Review Report-103K (183) | Answering Reviewers-322K (146) | Received: 07/05/2015 | Revised: 08/04/2015 | Accepted: 09/02/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (26) | Total Visits (10414) | Similar Articles (337) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (640) | Core Tip (717) | Full Article (HTML) (2763) | Figures (1-3) (132) | Tables (1-6) (93) | Full Article (PDF)-1070K (461) | Full Article (Word)-307K (296) | Peer-Review Report-107K (164) | Answering Reviewers-154K (330) | Received: 04/20/2015 | Revised: 07/08/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (14) | Total Visits (8726) | Similar Articles (112) | Timeline of Article Publication (1) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (717) | Core Tip (824) | Full Article (HTML) (3081) | Figures (1-3) (121) | Full Article (PDF)-1188K (488) | Full Article (Word)-1730K (239) | Peer-Review Report-113K (154) | Answering Reviewers-223K (149) | Received: 05/05/2015 | Revised: 07/01/2015 | Accepted: 07/18/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (16) | Total Visits (9783) | Similar Articles (335) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (615) | Core Tip (701) | Full Article (HTML) (3731) | Figures (1-2) (96) | Tables (1-6) (79) | Full Article (PDF)-1036K (1650) | Full Article (Word)-277K (212) | Peer-Review Report-126K (149) | Answering Reviewers-53K (117) | Received: 03/05/2015 | Revised: 05/13/2015 | Accepted: 07/18/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (10) | Total Visits (10628) | Similar Articles (0) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (730) | Core Tip (641) | Full Article (HTML) (3201) | Tables (1-5) (95) | Full Article (PDF)-968K (485) | Full Article (Word)-246K (222) | Peer-Review Report-90K (171) | Answering Reviewers-99K (170) | Received: 01/07/2015 | Revised: 05/28/2015 | Accepted: 08/31/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (23) | Total Visits (8214) | Similar Articles (0) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open

Abstract (838) | Core Tip (784) | Full Article (HTML) (5824) | Figures (1-3) (99) | Full Article (PDF)-1118K (2739) | Full Article (Word)-1383K (212) | Peer-Review Report-99K (186) | Answering Reviewers-166K (178) | Received: 02/02/2015 | Revised: 06/19/2015 | Accepted: 08/25/2015 | PubMed Central | PubMed | CrossRef | Google Scholar | Times Cited (16) | Total Visits (14615) | Similar Articles (5) | Timeline of Article Publication (0) | Article Quality Tracking (0) | What about the content of this article? (0) | Cite |  (0) | Open