收费全文 | 572篇 |
免费 | 21篇 |
国内免费 | 5篇 |
耳鼻咽喉 | 5篇 |
儿科学 | 15篇 |
妇产科学 | 7篇 |
基础医学 | 33篇 |
口腔科学 | 9篇 |
临床医学 | 51篇 |
内科学 | 128篇 |
皮肤病学 | 6篇 |
神经病学 | 35篇 |
特种医学 | 27篇 |
外科学 | 158篇 |
综合类 | 12篇 |
预防医学 | 43篇 |
眼科学 | 10篇 |
药学 | 11篇 |
中国医学 | 1篇 |
肿瘤学 | 47篇 |
2023年 | 4篇 |
2022年 | 14篇 |
2021年 | 26篇 |
2020年 | 10篇 |
2019年 | 19篇 |
2018年 | 16篇 |
2017年 | 6篇 |
2016年 | 11篇 |
2015年 | 21篇 |
2014年 | 24篇 |
2013年 | 24篇 |
2012年 | 39篇 |
2011年 | 47篇 |
2010年 | 16篇 |
2009年 | 24篇 |
2008年 | 34篇 |
2007年 | 34篇 |
2006年 | 21篇 |
2005年 | 31篇 |
2004年 | 23篇 |
2003年 | 26篇 |
2002年 | 23篇 |
2001年 | 24篇 |
2000年 | 17篇 |
1999年 | 16篇 |
1998年 | 3篇 |
1997年 | 7篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1976年 | 2篇 |
1973年 | 1篇 |
1971年 | 1篇 |
Introduction
Indications for repair of abdominal hernia are well established and widely diffused. Controversies still exist about the indication in using the different prosthetic materials and principally about the biological ones.Material and methods
In February 2012, the Italian Biological Prosthesis Work-Group (IBPWG), counting a background of 264 biologic implants, met in Bergamo (Italy) for 1-day meeting with the aim to elaborate a decisional model on biological prosthesis use in abdominal surgery.Results
A diagram to simplify the decisional process in using biologics has been elaborated.Conclusion
The present score represents a first attempt to combine scientific knowledge and clinical expertise in order to offer precise indications about the kind of biological mesh to use. 相似文献Background
Ethnic characteristics of a neighborhood may impact upon all-cause mortality (ACM). It is not known whether this consideration remains a risk modifier among those being evaluated for CAD.Methods
6,477 pts (60?±?13?years, male 38%) residing in NYC with normal or abnormal stress SPECT studies were assessed for ACM during a mean follow-up of 9?±?3.8?years. Baseline CAD risk factors and ethnic characteristics of patient neighborhoods were considered. Zip-codes with >70% of one ethnicity was considered to be predominant of that ethnicity.Results
There were 573 (20%) Hispanics (HS), 765 (27%) African-Americans (AA), and 250 (30%) Caucasians (CC) residing in areas >70% of their own ethnicity. Compared to CC, the risk for ACM was lower in HS (hazard ratio (HR) 0.68, 95% CI 0.57-0.8, P?<?.0001) and similar among AA (HR 1.1, 95% CI 0.95-1.41, P?=?.2). Among HS, there was a lower ACM among those residing in HS areas compared to those residing in a non-HS areas (HR 0.7 95% CI 0.56-0.9, P?=?.03) despite a lower median household income ($27,838?±?3,328 vs $37,751?±?17,036; P?<?.0001). This survival difference was not seen in CC and AA.Conclusion
Among patients referred for nuclear SPECT studies for suspected CAD, HS ethnicity was an independent predictor of a favorable prognosis. Among HS, the ethnic characteristic of patients?? neighborhoods was an independent predictor of ACM. These results imply that ethnic social support is a potentially powerful modifier of patient outcomes among certain patient groups. 相似文献Purpose
To determine the accuracy of 64-slice multidetector computed tomography scans in detecting the point of transition of small bowel obstruction by using surgical findings as the gold standard. 相似文献Background
Microbiology reference laboratories are critical in the development of high-quality clinical and public health services. In Belgium, the reference laboratories performed their activities on a voluntary basis and lacked a legal status.Methods
Pathogens or groups of pathogens necessitating a national reference center (NRC) were prioritized based on diagnostic and epidemiologic relevance. Terms of reference for each of these pathogens were developed.Results
Recently, 40 NRCs for different pathogens or groups of pathogens have been installed in Belgium to fulfill the following core functions: offering reference diagnostics, collecting reference materials, sharing information and scientific advice, participating in national and international networks, collaborating with research workgroups, and contributing to surveillance activities.Conclusions
These NRCs are important focal points of the national and international network in public health microbiology. 相似文献Methods: A qualitative study of 11 women, smokers and ex-smokers, from disadvantaged areas, who had used the National Health Service (NHS) Stop Smoking Service. Data were collected through a focus group and semi-structured interviews, and subjected to thematic analysis.
Results: The ban on smoking in confined public places was perceived as an effective measure for tobacco control. Methods to restrict accessibility – including removing point-of-sale displays, raising the price, and preventing sales in certain places – were perceived as effective techniques to deter smoking initiation and prevent triggering temptation to smoke for someone motivated to quit, but not helpful to change attitudes or behaviors among current smokers. Women felt desensitized to health warnings used on tobacco products. Public health campaigns with gain-framed messages were more likely to engage smokers to want to quit. Of the loss-framed messages, participants felt that focusing on personal appearance and children was effective.
Conclusions: Strategies that are tailored to attitudes and beliefs among women smokers should consider gain-framed messages and messages that focused on the effects to appearance and children to promote cessation and prevent relapse. 相似文献