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   152939篇
  免费   10471篇
  国内免费   769篇
耳鼻咽喉   1406篇
儿科学   3908篇
妇产科学   2774篇
基础医学   20610篇
口腔科学   3478篇
临床医学   14747篇
内科学   32936篇
皮肤病学   2885篇
神经病学   14835篇
特种医学   6169篇
外国民族医学   6篇
外科学   23026篇
综合类   1902篇
现状与发展   2篇
一般理论   139篇
预防医学   11038篇
眼科学   3205篇
药学   10510篇
  1篇
中国医学   245篇
肿瘤学   10357篇
  2023年   750篇
  2022年   1029篇
  2021年   2836篇
  2020年   1965篇
  2019年   2825篇
  2018年   3433篇
  2017年   2674篇
  2016年   3060篇
  2015年   3520篇
  2014年   5041篇
  2013年   6819篇
  2012年   10542篇
  2011年   11151篇
  2010年   6367篇
  2009年   6061篇
  2008年   10211篇
  2007年   10903篇
  2006年   10371篇
  2005年   10615篇
  2004年   10016篇
  2003年   9501篇
  2002年   8927篇
  2001年   1497篇
  2000年   1123篇
  1999年   1619篇
  1998年   2110篇
  1997年   1647篇
  1996年   1422篇
  1995年   1297篇
  1994年   1144篇
  1993年   1118篇
  1992年   792篇
  1991年   791篇
  1990年   625篇
  1989年   609篇
  1988年   565篇
  1987年   584篇
  1986年   513篇
  1985年   548篇
  1984年   650篇
  1983年   575篇
  1982年   767篇
  1981年   704篇
  1980年   607篇
  1979年   375篇
  1978年   381篇
  1977年   409篇
  1976年   344篇
  1975年   294篇
  1974年   253篇
排序方式: 共有10000条查询结果,搜索用时 937 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