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   229141篇
  免费   9697篇
  国内免费   473篇
耳鼻咽喉   3253篇
儿科学   6618篇
妇产科学   5225篇
基础医学   32545篇
口腔科学   7992篇
临床医学   13370篇
内科学   51604篇
皮肤病学   6480篇
神经病学   18695篇
特种医学   5566篇
外国民族医学   2篇
外科学   26706篇
综合类   1082篇
一般理论   50篇
预防医学   26594篇
眼科学   5850篇
药学   17543篇
中国医学   990篇
肿瘤学   9146篇
  2023年   1208篇
  2022年   791篇
  2021年   3523篇
  2020年   1962篇
  2019年   4078篇
  2018年   7319篇
  2017年   4524篇
  2016年   4417篇
  2015年   4948篇
  2014年   5449篇
  2013年   8457篇
  2012年   14691篇
  2011年   15572篇
  2010年   7711篇
  2009年   5485篇
  2008年   12791篇
  2007年   13795篇
  2006年   12994篇
  2005年   12676篇
  2004年   11574篇
  2003年   10887篇
  2002年   10322篇
  2001年   6932篇
  2000年   7792篇
  1999年   5963篇
  1998年   974篇
  1992年   2918篇
  1991年   2562篇
  1990年   2462篇
  1989年   2088篇
  1988年   1961篇
  1987年   1851篇
  1986年   1874篇
  1985年   1724篇
  1984年   1252篇
  1983年   1061篇
  1979年   1377篇
  1978年   902篇
  1977年   880篇
  1976年   861篇
  1975年   1009篇
  1974年   1298篇
  1973年   1367篇
  1972年   1272篇
  1971年   1249篇
  1970年   1157篇
  1969年   1221篇
  1968年   1260篇
  1967年   1114篇
  1966年   988篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
1.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
2.
3.
Journal of Immigrant and Minority Health - COVID-19 has disproportionally affected underrepresented minorities (URM) and low-income immigrants in the United States. The aim of the study is to...  相似文献   
4.
5.
6.
7.
8.
Introduction: The treatment of classical Hodgkin lymphoma (cHL) in children is a story of success. Nowadays, more than 90% of patients are cured and overall survival is nearly 100% at 5 years. Efforts have been made to avoid related effects of therapies; therefore, children are treated using different chemotherapy schemes in comparison with adults.

Areas covered: This review includes a view of the clinical classification and risk assessment in children suffering from HL. The chemotherapy more commonly employed is revisited. The use of PET/CT to evaluate the disease in order to guide therapy is analyzed. New options of chemotherapy and emerging immunotherapy are also included.

Expert opinion: In order to make the right treatment choice, a proper initial assessment of risk is mandatory. The choice of therapy in these kinds of patients must be done according to the experience of the team, and also, the cost and logistics related to the eligible scheme are very important. If possible, efforts must be made to include PET/CT in guiding therapy and avoiding overtreatment and long-term adverse effects in children. New options in immunotherapy are emerging and must be considered with caution in selected patients.  相似文献   

9.

Purpose

Endovascular treatment with mechanical thrombectomy devices demonstrated high recanalization rates but functional outcome did not correlate with high rates of recanalization obtained. Patient selection prior to the endovascular treatment is very important in the final outcome of the patient. The primary aim of our study was to evaluate the prognostic value of posterior circulation Alberta Stroke Program Early CT Score (pc-ASPECTS) and Pons-Midbrain Index (PMI) scores in patients with Basilar Artery Occlusion (BAO) treated with successful angiographic recanalization after mechanical thrombectomy.

Methods

Retrospective single-center study including 18 patients between 2008 and 2013 who had acute basilar artery occlusion managed with endovascular treatment within 24 hours from symptoms onset and with successful angiographic recanalization. The patients were initially classified into two groups according to clinical outcome and mortality at 90 days. For analysis we also divided patients into groups based on pc-ASPECTS (≥8vs.< 8) and PMI (≥3vs.< 3) on non-contrast CT (NCCT) and CT Angiography Source Images (CTASI). Imaging data were correlated to clinical outcome and mortality rate.

Results

CTASI pc-ASPECTS, dichotomized at < 8 versus≥8, was associated with a favorable outcome (RR: 2.6; 95% CI: 1.3-5.2) and a reduced risk of death (RR: 6.5: 95% CI: 7.8-23.3). All patients that survived and were functionally independent had pc-ASPECTS score≥8. None of the 5 patients with CTASI pc-ASPECTS score less than 8 survived.

Conclusion

PC-ASPECTS on CTASI is helpful for predicting functional outcome after BAO recanalization with endovascular treatment. These results should be validated in a randomized controlled trial in order to decide whether or not to treat a patient with BAO.  相似文献   
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