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   2589111篇
  免费   189577篇
  国内免费   7580篇
耳鼻咽喉   34410篇
儿科学   85388篇
妇产科学   71753篇
基础医学   364574篇
口腔科学   69894篇
临床医学   235000篇
内科学   516307篇
皮肤病学   62603篇
神经病学   213974篇
特种医学   100112篇
外国民族医学   736篇
外科学   387218篇
综合类   50485篇
现状与发展   5篇
一般理论   968篇
预防医学   196577篇
眼科学   56790篇
药学   188616篇
  9篇
中国医学   5406篇
肿瘤学   145443篇
  2021年   20106篇
  2019年   20756篇
  2018年   29530篇
  2017年   22794篇
  2016年   26473篇
  2015年   29705篇
  2014年   40729篇
  2013年   60913篇
  2012年   80759篇
  2011年   85104篇
  2010年   51358篇
  2009年   49337篇
  2008年   79183篇
  2007年   84020篇
  2006年   85721篇
  2005年   81869篇
  2004年   78843篇
  2003年   76155篇
  2002年   73449篇
  2001年   128512篇
  2000年   131430篇
  1999年   110609篇
  1998年   31297篇
  1997年   27955篇
  1996年   28268篇
  1995年   27428篇
  1994年   25098篇
  1993年   23448篇
  1992年   85209篇
  1991年   81603篇
  1990年   78819篇
  1989年   76106篇
  1988年   69502篇
  1987年   68020篇
  1986年   63574篇
  1985年   60540篇
  1984年   44983篇
  1983年   37971篇
  1982年   22485篇
  1981年   20008篇
  1979年   38986篇
  1978年   27465篇
  1977年   23272篇
  1976年   21513篇
  1975年   22836篇
  1974年   26809篇
  1973年   25393篇
  1972年   23765篇
  1971年   21971篇
  1970年   20192篇
排序方式: 共有10000条查询结果,搜索用时 31 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