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   173968篇
  免费   12565篇
  国内免费   793篇
耳鼻咽喉   1776篇
儿科学   4526篇
妇产科学   3354篇
基础医学   23490篇
口腔科学   4130篇
临床医学   17534篇
内科学   36893篇
皮肤病学   3285篇
神经病学   16472篇
特种医学   6891篇
外国民族医学   8篇
外科学   26038篇
综合类   2245篇
现状与发展   2篇
一般理论   150篇
预防医学   13091篇
眼科学   3591篇
药学   11972篇
  3篇
中国医学   304篇
肿瘤学   11571篇
  2023年   809篇
  2022年   1034篇
  2021年   3071篇
  2020年   2145篇
  2019年   3086篇
  2018年   3764篇
  2017年   2908篇
  2016年   3330篇
  2015年   3845篇
  2014年   5518篇
  2013年   7510篇
  2012年   11496篇
  2011年   12214篇
  2010年   6949篇
  2009年   6548篇
  2008年   11090篇
  2007年   11788篇
  2006年   11304篇
  2005年   11471篇
  2004年   10986篇
  2003年   10404篇
  2002年   9689篇
  2001年   2244篇
  2000年   1808篇
  1999年   2260篇
  1998年   2378篇
  1997年   1861篇
  1996年   1620篇
  1995年   1492篇
  1994年   1321篇
  1993年   1299篇
  1992年   1292篇
  1991年   1297篇
  1990年   1053篇
  1989年   1102篇
  1988年   1030篇
  1987年   1033篇
  1986年   950篇
  1985年   1003篇
  1984年   947篇
  1983年   845篇
  1982年   950篇
  1981年   870篇
  1980年   727篇
  1979年   619篇
  1978年   568篇
  1977年   562篇
  1976年   520篇
  1975年   447篇
  1974年   439篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
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   
23.
24.
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   
25.
26.
27.
28.
29.
Arthroscopic acromioclavicular joint excision is a commonly performed but technically demanding procedure. Incomplete excision can leave residual symptoms. We present a simple, reproducible technique ensuring satisfactory excision of the joint.  相似文献   
30.
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