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   2043190篇
  免费   152476篇
  国内免费   3131篇
耳鼻咽喉   29556篇
儿科学   64051篇
妇产科学   54254篇
基础医学   290020篇
口腔科学   58005篇
临床医学   177924篇
内科学   405391篇
皮肤病学   43828篇
神经病学   159582篇
特种医学   81227篇
外国民族医学   725篇
外科学   322750篇
综合类   42071篇
现状与发展   2篇
一般理论   576篇
预防医学   146780篇
眼科学   45989篇
药学   155068篇
  5篇
中国医学   4206篇
肿瘤学   116787篇
  2018年   20146篇
  2017年   15467篇
  2016年   17094篇
  2015年   19327篇
  2014年   26741篇
  2013年   40271篇
  2012年   55115篇
  2011年   58075篇
  2010年   34719篇
  2009年   33184篇
  2008年   56214篇
  2007年   59838篇
  2006年   60686篇
  2005年   58805篇
  2004年   57342篇
  2003年   55444篇
  2002年   54451篇
  2001年   107529篇
  2000年   111598篇
  1999年   94223篇
  1998年   23891篇
  1997年   21351篇
  1996年   21793篇
  1995年   20507篇
  1994年   19223篇
  1993年   17766篇
  1992年   73332篇
  1991年   71158篇
  1990年   69066篇
  1989年   66546篇
  1988年   61025篇
  1987年   59768篇
  1986年   55736篇
  1985年   53489篇
  1984年   39172篇
  1983年   33045篇
  1982年   18258篇
  1981年   16327篇
  1979年   34910篇
  1978年   23835篇
  1977年   20415篇
  1976年   18410篇
  1975年   20112篇
  1974年   23812篇
  1973年   22727篇
  1972年   21210篇
  1971年   19676篇
  1970年   18636篇
  1969年   17158篇
  1968年   15559篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional...  相似文献   
2.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
3.
PurposeUnderstanding the value of genetic screening and testing for monogenic disorders requires high-quality, methodologically robust economic evaluations. This systematic review sought to assess the methodological quality among such studies and examined opportunities for improvement.MethodsWe searched PubMed, Cochrane, Embase, and Web of Science for economic evaluations of genetic screening/testing (2013-2019). Methodological rigor and adherence to best practices were systematically assessed using the British Medical Journal checklist.ResultsAcross the 47 identified studies, there were substantial variations in modeling approaches, reporting detail, and sophistication. Models ranged from simple decision trees to individual-level microsimulations that compared between 2 and >20 alternative interventions. Many studies failed to report sufficient detail to enable replication or did not justify modeling assumptions, especially for costing methods and utility values. Meta-analyses, systematic reviews, or calibration were rarely used to derive parameter estimates. Nearly all studies conducted some sensitivity analysis, and more sophisticated studies implemented probabilistic sensitivity/uncertainty analysis, threshold analysis, and value of information analysis.ConclusionWe describe a heterogeneous body of work and present recommendations and exemplar studies across the methodological domains of (1) perspective, scope, and parameter selection; (2) use of uncertainty/sensitivity analyses; and (3) reporting transparency for improvement in the economic evaluation of genetic screening/testing.  相似文献   
4.
5.
6.
7.
8.
9.
10.
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   
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