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   2719371篇
  免费   191829篇
  国内免费   7929篇
耳鼻咽喉   36218篇
儿科学   90543篇
妇产科学   75785篇
基础医学   381042篇
口腔科学   73812篇
临床医学   245284篇
内科学   538910篇
皮肤病学   65685篇
神经病学   221409篇
特种医学   107389篇
外国民族医学   819篇
外科学   407321篇
综合类   51271篇
现状与发展   5篇
一般理论   969篇
预防医学   207939篇
眼科学   59875篇
药学   197494篇
  10篇
中国医学   5419篇
肿瘤学   151930篇
  2019年   20661篇
  2018年   32206篇
  2017年   25814篇
  2016年   28806篇
  2015年   33421篇
  2014年   43779篇
  2013年   62996篇
  2012年   87707篇
  2011年   87933篇
  2010年   52645篇
  2009年   51995篇
  2008年   80477篇
  2007年   85797篇
  2006年   87704篇
  2005年   90702篇
  2004年   89081篇
  2003年   82610篇
  2002年   75833篇
  2001年   130472篇
  2000年   132117篇
  1999年   113338篇
  1998年   31555篇
  1997年   28070篇
  1996年   28397篇
  1995年   27593篇
  1994年   25254篇
  1993年   23554篇
  1992年   88932篇
  1991年   85745篇
  1990年   83131篇
  1989年   80317篇
  1988年   73483篇
  1987年   71961篇
  1986年   67380篇
  1985年   63851篇
  1984年   47262篇
  1983年   39896篇
  1982年   23115篇
  1981年   20492篇
  1979年   41612篇
  1978年   29039篇
  1977年   24506篇
  1976年   22553篇
  1975年   24544篇
  1974年   29035篇
  1973年   27381篇
  1972年   25774篇
  1971年   23982篇
  1970年   22071篇
  1969年   21277篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
101.
102.
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   
103.
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   
104.
105.
106.
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   
107.
108.
109.
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