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   3216100篇
  免费   262713篇
  国内免费   9383篇
耳鼻咽喉   45337篇
儿科学   101137篇
妇产科学   86775篇
基础医学   448161篇
口腔科学   92403篇
临床医学   294233篇
内科学   636971篇
皮肤病学   69930篇
神经病学   270661篇
特种医学   129270篇
外国民族医学   1111篇
外科学   490550篇
综合类   76939篇
现状与发展   3篇
一般理论   1303篇
预防医学   263170篇
眼科学   73816篇
药学   234549篇
  9篇
中国医学   5845篇
肿瘤学   166023篇
  2018年   33300篇
  2016年   29538篇
  2015年   33237篇
  2014年   47346篇
  2013年   71704篇
  2012年   93206篇
  2011年   99278篇
  2010年   59757篇
  2009年   57604篇
  2008年   93525篇
  2007年   99621篇
  2006年   100634篇
  2005年   97993篇
  2004年   93973篇
  2003年   91071篇
  2002年   88629篇
  2001年   147520篇
  2000年   152495篇
  1999年   128412篇
  1998年   38729篇
  1997年   34930篇
  1996年   35243篇
  1995年   34685篇
  1994年   32507篇
  1993年   30450篇
  1992年   104962篇
  1991年   101706篇
  1990年   98130篇
  1989年   94021篇
  1988年   87493篇
  1987年   86283篇
  1986年   81661篇
  1985年   78474篇
  1984年   59812篇
  1983年   50967篇
  1982年   31518篇
  1981年   28355篇
  1980年   26674篇
  1979年   55700篇
  1978年   39828篇
  1977年   33545篇
  1976年   31345篇
  1975年   32908篇
  1974年   40102篇
  1973年   38186篇
  1972年   35719篇
  1971年   33092篇
  1970年   30923篇
  1969年   28791篇
  1968年   26483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