全文获取类型
| 收费全文 | 59010篇 |
| 免费 | 4072篇 |
| 国内免费 | 225篇 |
专业分类
| 耳鼻咽喉 | 687篇 |
| 儿科学 | 1502篇 |
| 妇产科学 | 1116篇 |
| 基础医学 | 7413篇 |
| 口腔科学 | 988篇 |
| 临床医学 | 5728篇 |
| 内科学 | 12089篇 |
| 皮肤病学 | 712篇 |
| 神经病学 | 5691篇 |
| 特种医学 | 1980篇 |
| 外国民族医学 | 4篇 |
| 外科学 | 9889篇 |
| 综合类 | 843篇 |
| 现状与发展 | 1篇 |
| 一般理论 | 69篇 |
| 预防医学 | 5250篇 |
| 眼科学 | 1212篇 |
| 药学 | 3658篇 |
| 中国医学 | 63篇 |
| 肿瘤学 | 4412篇 |
出版年
| 2023年 | 223篇 |
| 2022年 | 428篇 |
| 2021年 | 1012篇 |
| 2020年 | 567篇 |
| 2019年 | 960篇 |
| 2018年 | 1175篇 |
| 2017年 | 817篇 |
| 2016年 | 911篇 |
| 2015年 | 1012篇 |
| 2014年 | 1674篇 |
| 2013年 | 2484篇 |
| 2012年 | 3631篇 |
| 2011年 | 3955篇 |
| 2010年 | 2237篇 |
| 2009年 | 2049篇 |
| 2008年 | 3579篇 |
| 2007年 | 3736篇 |
| 2006年 | 3709篇 |
| 2005年 | 3781篇 |
| 2004年 | 3718篇 |
| 2003年 | 3401篇 |
| 2002年 | 3332篇 |
| 2001年 | 521篇 |
| 2000年 | 406篇 |
| 1999年 | 599篇 |
| 1998年 | 760篇 |
| 1997年 | 644篇 |
| 1996年 | 587篇 |
| 1995年 | 552篇 |
| 1994年 | 494篇 |
| 1993年 | 446篇 |
| 1992年 | 381篇 |
| 1991年 | 388篇 |
| 1990年 | 324篇 |
| 1989年 | 321篇 |
| 1988年 | 306篇 |
| 1987年 | 291篇 |
| 1986年 | 280篇 |
| 1985年 | 317篇 |
| 1984年 | 487篇 |
| 1983年 | 418篇 |
| 1982年 | 532篇 |
| 1981年 | 516篇 |
| 1980年 | 501篇 |
| 1979年 | 260篇 |
| 1978年 | 302篇 |
| 1977年 | 288篇 |
| 1976年 | 231篇 |
| 1975年 | 225篇 |
| 1974年 | 243篇 |
排序方式： 共有10000条查询结果，搜索用时 0 毫秒
1.
Michael E Egger Joanna M Ohlendorf Charles R Scoggins Kelly M McMasters Robert C G Martin II 《HPB : the official journal of the International Hepato Pancreato Biliary Association》2015,17(9):839-845
BackgroundThe aim of this paper is to assess the current state of quality and outcomes measures being reported for hepatic resections in the recent literature.MethodsMedline and PubMed databases were searched for English language articles published between 1 January 2002 and 30 April 2013. Two examiners reviewed each article and relevant citations for appropriateness of inclusion, which excluded papers of liver donor hepatic resections, repeat hepatectomies or meta-analyses. Data were extracted and summarized by two examiners for analysis.ResultsFifty-five studies were identified with suitable reporting to assess peri-operative mortality in hepatic resections. In only 35% (19/55) of the studies was the follow-up time explicitly stated, and in 47% (26/55) of studies peri-operative mortality was limited to in-hospital or 30 days. The time period in which complications were captured was not explicitly stated in 19 out of 28 studies. The remaining studies only captured complications within 30 days of the index operation (8/28). There was a paucity of quality literature addressing truly patient-centred outcomes.ConclusionQuality outcomes after a hepatic resection are inconsistently reported in the literature. Quality outcome studies for a hepatectomy should report mortality and morbidity at a minimum of 90 days after surgery. 相似文献
2.
3.
4.
5.
Hanna Lee Mary K. Tan Andrew T. Yan Paul Angaran Paul Dorian Claudia Bucci Jean C. Gregoire Alan D. Bell Martin S. Green Peter L. Gross Allan Skanes Charles R. Kerr L. Brent Mitchell Jafna L. Cox Vidal Essebag Brett Heilbron Krishnan Ramanathan Carl Fournier Shaun G. Goodman 《The Canadian journal of cardiology》2019,35(2):160-168
Background
Physicians treating nonvalvular atrial fibrillation (AF) assess stroke and bleeding risks when deciding on anticoagulation. The agreement between empirical and physician-estimated risks is unclear. Furthermore, the association between patient and physician sex and anticoagulation decision-making is uncertain.Methods
We pooled data from 2 national primary care physician chart audit databases of patients with AF (Facilitating Review and Education to Optimize Stroke Prevention in Atrial Fibrillation and Coordinated National Network to Engage Physicians in the Care and Treatment of Patients with Atrial Fibrillation Chart Audit) with a combined 1035 physicians (133 female, 902 male) and 10,927 patients (4567 female and 6360 male).Results
Male physicians underestimated stroke risk in female patients and overestimated risk in male patients. Female physicians estimated stroke risk well in female patients but underestimated the risk in male patients. Risk of bleeding was underestimated in all. Despite differences in risk assessment by physician and patient sex, > 90% of patients received anticoagulation across all subgroups. There was modest agreement between physician estimated and calculated (ie, CHADS2 score) stroke risk: Kappa scores were 0.41 (0.35-0.47) for female physicians and 0.34 (0.32-0.36) for male physicians.Conclusions
Our study is the first to examine the association between patient and physician sex influences and stroke and bleeding risk estimation in AF. Although there were differences in agreement between physician estimated stroke risk and calculated CHADS2 scores, these differences were small and unlikely to affect clinical practice; further, despite any perceived differences in the accuracy of risk assessment by sex, most patients received anticoagulation. 相似文献6.
7.
8.
9.
10.
Setting goals to maintain hope. 总被引：3，自引：0，他引：3