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   2585892篇
  免费   189445篇
  国内免费   7563篇
耳鼻咽喉   34308篇
儿科学   85259篇
妇产科学   71630篇
基础医学   363918篇
口腔科学   69676篇
临床医学   234923篇
内科学   515953篇
皮肤病学   62480篇
神经病学   213765篇
特种医学   99965篇
外国民族医学   736篇
外科学   386686篇
综合类   50477篇
现状与发展   5篇
一般理论   972篇
预防医学   196536篇
眼科学   56704篇
药学   188184篇
  8篇
中国医学   5335篇
肿瘤学   145380篇
  2021年   20028篇
  2019年   20672篇
  2018年   29338篇
  2017年   22639篇
  2016年   26266篇
  2015年   29549篇
  2014年   40496篇
  2013年   60526篇
  2012年   80378篇
  2011年   84656篇
  2010年   51085篇
  2009年   49214篇
  2008年   79165篇
  2007年   83997篇
  2006年   85712篇
  2005年   81882篇
  2004年   78882篇
  2003年   76164篇
  2002年   73460篇
  2001年   128463篇
  2000年   131378篇
  1999年   110556篇
  1998年   31275篇
  1997年   27952篇
  1996年   28234篇
  1995年   27408篇
  1994年   25090篇
  1993年   23431篇
  1992年   85198篇
  1991年   81610篇
  1990年   78820篇
  1989年   76092篇
  1988年   69498篇
  1987年   68027篇
  1986年   63573篇
  1985年   60556篇
  1984年   44962篇
  1983年   37972篇
  1982年   22474篇
  1981年   20000篇
  1979年   38988篇
  1978年   27461篇
  1977年   23262篇
  1976年   21511篇
  1975年   22830篇
  1974年   26807篇
  1973年   25383篇
  1972年   23773篇
  1971年   21972篇
  1970年   20205篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
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   
102.
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   
103.
104.
105.
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   
106.
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