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   295759篇
  免费   41697篇
  国内免费   3048篇
耳鼻咽喉   6364篇
儿科学   9067篇
妇产科学   5059篇
基础医学   23377篇
口腔科学   4864篇
临床医学   40513篇
内科学   78154篇
皮肤病学   10148篇
神经病学   28825篇
特种医学   12207篇
外国民族医学   6篇
外科学   62447篇
综合类   2114篇
现状与发展   74篇
一般理论   139篇
预防医学   17723篇
眼科学   6410篇
药学   11304篇
  1篇
中国医学   251篇
肿瘤学   21457篇
  2024年   561篇
  2023年   5352篇
  2022年   2131篇
  2021年   5743篇
  2020年   7772篇
  2019年   4863篇
  2018年   10501篇
  2017年   9700篇
  2016年   11143篇
  2015年   11586篇
  2014年   19992篇
  2013年   21856篇
  2012年   15658篇
  2011年   16284篇
  2010年   16311篇
  2009年   19739篇
  2008年   15677篇
  2007年   14648篇
  2006年   16548篇
  2005年   14143篇
  2004年   12836篇
  2003年   11343篇
  2002年   10878篇
  2001年   5156篇
  2000年   4053篇
  1999年   4692篇
  1998年   5640篇
  1997年   4983篇
  1996年   4673篇
  1995年   4380篇
  1994年   3018篇
  1993年   2619篇
  1992年   2107篇
  1991年   2153篇
  1990年   1637篇
  1989年   1746篇
  1988年   1555篇
  1987年   1396篇
  1986年   1361篇
  1985年   1231篇
  1984年   1166篇
  1983年   1071篇
  1982年   1252篇
  1981年   1094篇
  1980年   948篇
  1979年   667篇
  1978年   692篇
  1977年   794篇
  1976年   567篇
  1975年   564篇
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
41.
42.
43.
44.
Context: Persons with spinal cord injury (SCI) experience significant challenges when they access primary care and community services.

Design: A provincial summit was held to direct research, education, and innovation for primary and community care for SCI.

Setting: Toronto, Ontario, Canada.

Participants: Key stakeholders (N?=?95) including persons with SCI and caregivers, clinicians from primary care, rehabilitation, and specialized care, researchers, advocacy groups, and policy makers.

Methods: A one-day facilitated meeting that included guest speakers, panel discussions and small group discussions was held to generate potential solutions to current issues related to SCI care and to foster collaborative relationships to advance care for SCI. Perspectives on SCI management were shared by primary care, neurosurgery, rehabilitation, and members of the SCI community

Outcome Measures: Discussions were focused on five domains: knowledge translation and dissemination, application of best practices, communication, research, and patient service accessibility.

Results: Summit participants identified issues and prioritized solutions to improve primary and community care including the creation of a network of key stakeholders to enable knowledge creation and dissemination; an online repository of SCI resources, integrated health records, and a clinical network for SCI care; development and implementation of strategies to improve care transitions across sectors; implementation of effective care models and improved access to services; and utilization of empowerment frameworks to support self-management.

Conclusions: This summit identified priorities for further collaborative efforts to advance SCI primary and community care and will inform the development of a provincial SCI strategy aimed at improving the system of care for SCI.  相似文献   
45.
46.
47.
48.
49.
50.
The identification of EGFR mutations in non‐small‐cell lung cancer is important for selecting patients, who may benefit from treatment with EGFR tyrosine kinase inhibitors. The analysis is usually performed on cytological aspirates and/or histological needle biopsies, representing a small fraction of the tumour volume. The aim of the present investigation was to evaluate the diagnostic performance of this molecular test. We retrospectively included 201 patients with primary adenocarcinoma of the lung. EGFR mutation status (exon 19 deletions and exon 21 L858R point mutation) was evaluated on both pre‐operative biopsies (131 histological and 70 cytological) and on the surgical specimens, using PCR. Samples with low tumour cell fraction were assigned to laser micro‐dissection (LMD). We found nine (4.5%) patients with EGFR mutation in the lung tumour resections, but failed to identify mutation in one of the corresponding pre‐operative, cytological specimens. Several (18.4%) analyses of the pre‐operative biopsies were inconclusive, especially in case of biopsies undergoing LMD and regarding exon 21 analysis. Discrepancy of mutation status in one patient may reflect intra‐tumoural heterogeneity or technical issues. Moreover, several inconclusive results in the diagnostic biopsies reveal that attention must be paid on the suitability of pre‐operative biopsies for EGFR mutation analysis.  相似文献   
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