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   41952篇
  免费   7135篇
  国内免费   113篇
耳鼻咽喉   688篇
儿科学   1309篇
妇产科学   1280篇
基础医学   3986篇
口腔科学   1534篇
临床医学   7161篇
内科学   10739篇
皮肤病学   775篇
神经病学   3403篇
特种医学   845篇
外科学   3838篇
综合类   189篇
现状与发展   2篇
一般理论   26篇
预防医学   6337篇
眼科学   664篇
药学   2056篇
  1篇
中国医学   56篇
肿瘤学   4311篇
  2024年   183篇
  2023年   1247篇
  2022年   744篇
  2021年   1354篇
  2020年   1658篇
  2019年   1036篇
  2018年   1853篇
  2017年   1713篇
  2016年   2004篇
  2015年   2138篇
  2014年   2816篇
  2013年   3542篇
  2012年   2652篇
  2011年   2712篇
  2010年   2208篇
  2009年   2547篇
  2008年   2315篇
  2007年   2180篇
  2006年   2425篇
  2005年   1938篇
  2004年   1792篇
  2003年   1590篇
  2002年   1396篇
  2001年   425篇
  2000年   353篇
  1999年   410篇
  1998年   539篇
  1997年   413篇
  1996年   391篇
  1995年   307篇
  1994年   274篇
  1993年   214篇
  1992年   181篇
  1991年   174篇
  1990年   175篇
  1989年   159篇
  1988年   112篇
  1987年   95篇
  1986年   102篇
  1985年   94篇
  1984年   108篇
  1983年   111篇
  1982年   85篇
  1981年   56篇
  1980年   66篇
  1979年   44篇
  1978年   34篇
  1977年   43篇
  1976年   35篇
  1975年   34篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs.  相似文献   
5.
6.
Despite orientation and mobility (O&M) being a significant factor determining quality of life of people with low vision or blindness, there are no gold standard measures or agreement on how to measure O&M performance. In the first part of this systematic review, an inventory of O&M outcome measures used by recent studies to assess the performance of orientation and/or mobility of adults with vision impairment (low vision and blindness) is presented. A wide variety of O&M outcome measures have been implemented in different fields of study, such as epidemiologic research and interventional studies evaluating training, assistive technology, vision rehabilitation and vision restoration. The most frequent aspect of outcome measures is efficiency such as time, distance, speed and percentage of preferred walking speed, followed by obstacle contacts and avoidance, and dis/orientation and veering. Other less commonly used aspects are target identification, safety and social interaction and self-reported outcome measures. Some studies employ sophisticated equipment to capture and analyse O&M performance in a laboratory setting, while others carry out their assessment in real-world indoor or outdoor environments. In the second part of this review, the appropriateness of implementing the identified outcome measures to assess O&M performance in clinical and functional O&M practice is evaluated. Nearly a half of these outcome measures meet all four criteria of face validity (either clinical or functional), responsiveness, reliability and feasibility and have the potential to be implemented in clinical or functional O&M practice. The findings of this review confirm the complicated and dynamic nature of O&M. Multiple measures are required in any evaluation of O&M performance to facilitate holistic assessment of O&M abilities and limitations of each individual.  相似文献   
7.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
8.
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