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   3208590篇
  免费   262423篇
  国内免费   9315篇
耳鼻咽喉   45289篇
儿科学   100966篇
妇产科学   86591篇
基础医学   446830篇
口腔科学   92123篇
临床医学   293742篇
内科学   634928篇
皮肤病学   69820篇
神经病学   269950篇
特种医学   129296篇
外国民族医学   1121篇
外科学   489991篇
综合类   76959篇
现状与发展   3篇
一般理论   1302篇
预防医学   262400篇
眼科学   73860篇
药学   233860篇
  9篇
中国医学   5771篇
肿瘤学   165517篇
  2018年   32948篇
  2016年   29251篇
  2015年   32937篇
  2014年   46917篇
  2013年   71209篇
  2012年   92398篇
  2011年   98426篇
  2010年   59362篇
  2009年   57238篇
  2008年   92941篇
  2007年   99015篇
  2006年   100090篇
  2005年   97572篇
  2004年   93598篇
  2003年   90702篇
  2002年   88298篇
  2001年   147479篇
  2000年   152492篇
  1999年   128399篇
  1998年   38698篇
  1997年   34885篇
  1996年   35199篇
  1995年   34668篇
  1994年   32490篇
  1993年   30426篇
  1992年   104962篇
  1991年   101727篇
  1990年   98163篇
  1989年   94078篇
  1988年   87516篇
  1987年   86336篇
  1986年   81684篇
  1985年   78522篇
  1984年   59872篇
  1983年   51004篇
  1982年   31554篇
  1981年   28388篇
  1980年   26708篇
  1979年   55755篇
  1978年   39869篇
  1977年   33589篇
  1976年   31396篇
  1975年   32943篇
  1974年   40153篇
  1973年   38249篇
  1972年   35775篇
  1971年   33136篇
  1970年   30965篇
  1969年   28831篇
  1968年   26509篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST.  相似文献   
105.
106.
107.
108.
Behçet disease is a complex, multisystem disease characterized by recurrent oral and genital ulcerations. It rarely occurs in infants or children. Neonatal Behçet disease has been reported in infants whose ulcers resolve at or before 9 weeks of age. Few cases of neonatal Behçet disease persisting into childhood have previously been reported. We report the case of a 1‐month‐old infant who presented with severe recurrent genital ulcerations and at 6 months developed recurrent oral ulcerations. Her orogenital ulcerations continue to recur. Human leukocyte antigen testing revealed HLA‐B51 and B44 positivity. This is a case of pediatric Behçet disease in the neonatal period. Behçet disease should be considered in the differential diagnosis of recurrent genital and oral ulcerations in infants and children.  相似文献   
109.
Caring for patients with end-stage kidney disease (ESKD) in the United States is challenging, due in part to the complex epidemiology of the disease's progression as well as the ways in which care is delivered. As CKD progresses toward ESKD, the number of comorbidities increases and care involves multiple healthcare providers from multiple subspecialties. This occurs in the context of a fragmented US healthcare delivery system that is traditionally siloed by provider specialty, organization, as well as systems of payment and administration. This article describes the role of care fragmentation in the delivery of optimal ESKD care and identifies research gaps in the evidence across the continuum of care. We then consider the impact of care fragmentation on ESKD care from the patient and health system perspectives and explore opportunities for system-level interventions aimed at improving care for patients with ESKD.  相似文献   
110.
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