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   2610515篇
  免费   191704篇
  国内免费   9663篇
耳鼻咽喉   34464篇
儿科学   85581篇
妇产科学   71882篇
基础医学   366635篇
口腔科学   70109篇
临床医学   238224篇
内科学   519509篇
皮肤病学   62688篇
神经病学   214745篇
特种医学   101037篇
外国民族医学   748篇
外科学   389472篇
综合类   55094篇
现状与发展   11篇
一般理论   971篇
预防医学   197981篇
眼科学   57307篇
药学   190937篇
  35篇
中国医学   6891篇
肿瘤学   147561篇
  2021年   21290篇
  2019年   21522篇
  2018年   30201篇
  2017年   23462篇
  2016年   27102篇
  2015年   30732篇
  2014年   41955篇
  2013年   61786篇
  2012年   82018篇
  2011年   86674篇
  2010年   52391篇
  2009年   50224篇
  2008年   80429篇
  2007年   85317篇
  2006年   86981篇
  2005年   83129篇
  2004年   79776篇
  2003年   77119篇
  2002年   74295篇
  2001年   129170篇
  2000年   131991篇
  1999年   111150篇
  1998年   31647篇
  1997年   28397篇
  1996年   28534篇
  1995年   27664篇
  1994年   25281篇
  1993年   23592篇
  1992年   85312篇
  1991年   81735篇
  1990年   78924篇
  1989年   76180篇
  1988年   69563篇
  1987年   68104篇
  1986年   63628篇
  1985年   60563篇
  1984年   44975篇
  1983年   37962篇
  1982年   22468篇
  1981年   19997篇
  1979年   38995篇
  1978年   27457篇
  1977年   23256篇
  1976年   21505篇
  1975年   22825篇
  1974年   26800篇
  1973年   25378篇
  1972年   23757篇
  1971年   21959篇
  1970年   20184篇
排序方式: 共有10000条查询结果,搜索用时 15 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