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   2616934篇
  免费   191996篇
  国内免费   7594篇
耳鼻咽喉   34646篇
儿科学   86194篇
妇产科学   72331篇
基础医学   367926篇
口腔科学   70505篇
临床医学   238656篇
内科学   521554篇
皮肤病学   62954篇
神经病学   216995篇
特种医学   101264篇
外国民族医学   739篇
外科学   390819篇
综合类   50953篇
现状与发展   5篇
一般理论   1003篇
预防医学   199761篇
眼科学   57493篇
药学   190224篇
  10篇
中国医学   5366篇
肿瘤学   147126篇
  2021年   20628篇
  2019年   21219篇
  2018年   29929篇
  2017年   23148篇
  2016年   26748篇
  2015年   30057篇
  2014年   41198篇
  2013年   61637篇
  2012年   81872篇
  2011年   86236篇
  2010年   51938篇
  2009年   49981篇
  2008年   80493篇
  2007年   85450篇
  2006年   87085篇
  2005年   83109篇
  2004年   80106篇
  2003年   77338篇
  2002年   74637篇
  2001年   129159篇
  2000年   132101篇
  1999年   111195篇
  1998年   31595篇
  1997年   28226篇
  1996年   28522篇
  1995年   27656篇
  1994年   25320篇
  1993年   23637篇
  1992年   85798篇
  1991年   82203篇
  1990年   79413篇
  1989年   76689篇
  1988年   69968篇
  1987年   68603篇
  1986年   64119篇
  1985年   61107篇
  1984年   45383篇
  1983年   38328篇
  1982年   22728篇
  1981年   20228篇
  1979年   39421篇
  1978年   27786篇
  1977年   23558篇
  1976年   21820篇
  1975年   23082篇
  1974年   27145篇
  1973年   25702篇
  1972年   24030篇
  1971年   22203篇
  1970年   20402篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
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   
104.
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   
105.
106.
107.
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   
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