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   26559篇
  免费   1585篇
  国内免费   223篇
耳鼻咽喉   175篇
儿科学   696篇
妇产科学   665篇
基础医学   3769篇
口腔科学   516篇
临床医学   2244篇
内科学   6920篇
皮肤病学   367篇
神经病学   2710篇
特种医学   896篇
外科学   2642篇
综合类   68篇
一般理论   8篇
预防医学   1719篇
眼科学   335篇
药学   1894篇
中国医学   80篇
肿瘤学   2663篇
  2024年   21篇
  2023年   220篇
  2022年   439篇
  2021年   920篇
  2020年   529篇
  2019年   764篇
  2018年   873篇
  2017年   696篇
  2016年   780篇
  2015年   860篇
  2014年   1118篇
  2013年   1449篇
  2012年   2329篇
  2011年   2304篇
  2010年   1251篇
  2009年   1184篇
  2008年   1863篇
  2007年   1741篇
  2006年   1702篇
  2005年   1557篇
  2004年   1409篇
  2003年   1233篇
  2002年   1075篇
  2001年   175篇
  2000年   126篇
  1999年   181篇
  1998年   207篇
  1997年   186篇
  1996年   163篇
  1995年   103篇
  1994年   91篇
  1993年   81篇
  1992年   81篇
  1991年   65篇
  1990年   59篇
  1989年   30篇
  1988年   51篇
  1987年   45篇
  1986年   44篇
  1985年   40篇
  1984年   39篇
  1983年   35篇
  1982年   38篇
  1981年   33篇
  1980年   27篇
  1979年   15篇
  1978年   17篇
  1977年   14篇
  1973年   15篇
  1972年   13篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Henoch‐Schonlein purpura (HSP) is the most common systemic vasculitis in childhood. There is no consensus about the management for isolated cutaneous manifestations in HSP. We describe a case of HSP presenting with severe skin lesions that did not respond to standard therapy with corticosteroids. The 11‐year‐old child was treated with intravenous immunoglobulins, which induced rapid and persistent resolution of symptomatology.  相似文献   
3.
4.
5.
6.
7.

Objectives

To determine the incidence of incisional hernia (IH) in the extraction incision (EI) in colorectal resection for cancer. To analyze whether the location of the incision has any relationship with the incidence of hernias and whether mesh could be useful for prevention in high-risk patients.

Methods

Retrospective review of the colon and rectal surgery database from January 2015 to December 2016. Data were classified into 2 groups, transverse (TI) and midline incision (MI), and the latter was divided into 2 subgroups (mesh [MIM] and suture [MIS]). Patients were classified using the HERNIAscore. Hernias were diagnosed by clinical and/or CT examination.

Results

A total of 182 out of 210 surgical patients were included. After a median follow-up of 13.0 months, 39 IH (21.9%) were detected, 23 of which (13.4%) were in the EI; their frequency was lower in the TI group (3.4%) and in the MIM group (5.9%) than in the MIS group (29.5%; p = 0.007). The probability of developing IH in the MIS group showed an OR = 11.7 (95%CI: 3.3-42.0) compared to the TI group and 4.3 (IC 95%: 1.1-16.3) versus the MIM group.

Conclusions

The location of the incision is relevant to avoid incisional hernias. Transverse incisions should be used as the first option. When a midline incision is needed, a prophylactic mesh could be considered in high risk patients because it is safe and associated with low morbidity.  相似文献   
8.
Even if the relationships between nutrition and inflammatory bowel disease (IBD) remain underexplored, the current literature is providing, day by day, much more evidence on the effects of various diets in both prevention and treatment of such illnesses. Wrong dietary habits, together with other environmental factors such as pollution, breastfeeding, smoke, and/or antibiotics, are among the theoretical pathogenetic causes of IBD, whose multifactorial aetiology has been already confirmed. While some of these risk factors are potentially reversible, some others cannot be avoided, and efficient treatments become necessary to prevent IBD spread or recurrence. Furthermore, the drugs currently available for treatment of such disease provide low-to-no effect against the symptoms, making the illnesses still strongly disabling. Whether nutrition and specific diets will prove to effectively interrupt the course of IBD has still to be clarified and, in this sense, further research concerning the applications of such dietary interventions is still needed.  相似文献   
9.
10.
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