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   2678582篇
  免费   193272篇
  国内免费   7871篇
耳鼻咽喉   35686篇
儿科学   87693篇
妇产科学   74303篇
基础医学   376380篇
口腔科学   72530篇
临床医学   241179篇
内科学   537363篇
皮肤病学   64889篇
神经病学   221518篇
特种医学   102357篇
外国民族医学   743篇
外科学   397749篇
综合类   50980篇
现状与发展   5篇
一般理论   999篇
预防医学   206716篇
眼科学   58728篇
药学   194807篇
  8篇
中国医学   5635篇
肿瘤学   149457篇
  2021年   22272篇
  2019年   22859篇
  2018年   33694篇
  2017年   25269篇
  2016年   28275篇
  2015年   31626篇
  2014年   43161篇
  2013年   64416篇
  2012年   86599篇
  2011年   91063篇
  2010年   54558篇
  2009年   51963篇
  2008年   84290篇
  2007年   89312篇
  2006年   90819篇
  2005年   86959篇
  2004年   83595篇
  2003年   80513篇
  2002年   77583篇
  2001年   130160篇
  2000年   133140篇
  1999年   111983篇
  1998年   31788篇
  1997年   28268篇
  1996年   28548篇
  1995年   27669篇
  1994年   25301篇
  1993年   23639篇
  1992年   85985篇
  1991年   82335篇
  1990年   79548篇
  1989年   76759篇
  1988年   70094篇
  1987年   68651篇
  1986年   64175篇
  1985年   61146篇
  1984年   45392篇
  1983年   38314篇
  1982年   22675篇
  1981年   20174篇
  1979年   39479篇
  1978年   27765篇
  1977年   23520篇
  1976年   21811篇
  1975年   23138篇
  1974年   27253篇
  1973年   25815篇
  1972年   24140篇
  1971年   22315篇
  1970年   20592篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
111.
112.
113.
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   
114.
Objectives:To report if the association of epilepsy in pediatric patients (below the age of 15 years) with Insulin-dependent Diabetes (IDDM) at King Fahad Medical City (KFMC) is higher than the prevalence of epilepsy in the same age group (who have no IDDM) in our community. Consequently, we would determine if there is a relationship between the presence of epilepsy in diabetic children and the presence of positive antiGAD65 antibodies.Methods:This cohort study included 305 pediatric patients below the age of 15 years with Insulin-dependent Diabetes Mellitus (IDDM). They were randomly recruited at the Pediatric Endocrinology Clinic in KFMC. The patients’ caregivers were given a questionnaire between December 2015 till March 2019 to determine the seizure disorder history. There was also a retrospective review of 214 patients’ files for anti-GAD 65 positivity.Results:Our study found a significant relation between the presence of epilepsy in children with IDDM. Therefore, we could confirm the relationship between the existence of epilepsy in children with IDDM and having positive GAD65 antibodies.Conclusion:Our study supports the presence of consistent relation between having IDDM and having epilepsy in children and between the latter and the presence of positive GAD65 antibodies.

Insulin dependent diabetes Mellitus (IDDM) is a common condition in children and adolescents worldwide and so is epilepsy.1,2 Recently, there were increasing reports suggesting a potential association between having IDDM and the occurrence of epilepsy.3 Their association might represent simply a chance to relate their underlying mechanisms. However, the cause-effect relationship is not fully well defined. Literature from other countries have shown the increased prevalence of seizure disorders in this group of patients.4,5 There are scarce studies in the literature investigating IDDM characteristics contributing to having epilepsy, including positive GAD 65 antibodies. In this study that ran in King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia (KSA) we are aiming to determine if the prevalence of epilepsy among 1DDM children under the age of 15 years (in our center) is higher than controls (same age without IDDM), and to check the positivity of anti-GAD 65 amongst those patients in order to find if there is a relationship between epilepsy in children with diabetes and the presence of positive GAD65 Antibodies.  相似文献   
115.
116.
117.
Nevo  N.  Goldstein  A. L.  Staierman  M.  Eran  N.  Carmeli  I.  Rayman  S.  mnouskin  Y. 《Hernia》2022,26(6):1491-1499
Hernia - The minimally invasive surgical repair of combined inguinal and ventral hernias often requires shifting from one approach or plane to another. The traditional enhanced-view totally...  相似文献   
118.
119.
120.
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