首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   66564篇
  免费   4705篇
  国内免费   230篇
耳鼻咽喉   726篇
儿科学   1733篇
妇产科学   1366篇
基础医学   8294篇
口腔科学   1122篇
临床医学   6799篇
内科学   13451篇
皮肤病学   795篇
神经病学   6462篇
特种医学   2180篇
外国民族医学   4篇
外科学   10957篇
综合类   1007篇
现状与发展   1篇
一般理论   80篇
预防医学   5810篇
眼科学   1434篇
药学   4099篇
中国医学   67篇
肿瘤学   5112篇
  2023年   275篇
  2022年   442篇
  2021年   1047篇
  2020年   619篇
  2019年   1051篇
  2018年   1250篇
  2017年   884篇
  2016年   989篇
  2015年   1112篇
  2014年   1777篇
  2013年   2682篇
  2012年   3978篇
  2011年   4306篇
  2010年   2390篇
  2009年   2210篇
  2008年   3967篇
  2007年   4072篇
  2006年   4081篇
  2005年   4147篇
  2004年   4092篇
  2003年   3809篇
  2002年   3703篇
  2001年   904篇
  2000年   778篇
  1999年   905篇
  1998年   841篇
  1997年   723篇
  1996年   658篇
  1995年   627篇
  1994年   549篇
  1993年   502篇
  1992年   569篇
  1991年   585篇
  1990年   486篇
  1989年   478篇
  1988年   460篇
  1987年   448篇
  1986年   395篇
  1985年   447篇
  1984年   547篇
  1983年   472篇
  1982年   576篇
  1981年   555篇
  1980年   541篇
  1979年   356篇
  1978年   365篇
  1977年   348篇
  1976年   276篇
  1975年   271篇
  1974年   304篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
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   
4.
5.
6.
7.
8.

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   
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号