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   307160篇
  免费   15320篇
  国内免费   1322篇
耳鼻咽喉   4276篇
儿科学   8957篇
妇产科学   7339篇
基础医学   42938篇
口腔科学   9618篇
临床医学   20660篇
内科学   67839篇
皮肤病学   7938篇
神经病学   26534篇
特种医学   8804篇
外国民族医学   25篇
外科学   37807篇
综合类   2773篇
一般理论   83篇
预防医学   30199篇
眼科学   6742篇
药学   24224篇
  3篇
中国医学   1559篇
肿瘤学   15484篇
  2023年   1550篇
  2022年   2775篇
  2021年   6195篇
  2020年   3513篇
  2019年   6004篇
  2018年   8639篇
  2017年   5635篇
  2016年   5717篇
  2015年   6364篇
  2014年   8144篇
  2013年   12073篇
  2012年   18247篇
  2011年   19427篇
  2010年   10570篇
  2009年   8528篇
  2008年   15800篇
  2007年   16715篇
  2006年   15927篇
  2005年   15367篇
  2004年   14822篇
  2003年   13948篇
  2002年   13236篇
  2001年   9568篇
  2000年   10143篇
  1999年   8044篇
  1998年   2230篇
  1997年   1701篇
  1996年   1544篇
  1995年   1431篇
  1992年   4386篇
  1991年   4042篇
  1990年   3763篇
  1989年   3368篇
  1988年   3187篇
  1987年   2903篇
  1986年   2901篇
  1985年   2676篇
  1984年   1917篇
  1983年   1712篇
  1979年   1903篇
  1978年   1325篇
  1975年   1359篇
  1974年   1696篇
  1973年   1693篇
  1972年   1585篇
  1971年   1544篇
  1970年   1413篇
  1969年   1510篇
  1968年   1507篇
  1967年   1353篇
排序方式: 共有10000条查询结果,搜索用时 15 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.
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status...  相似文献   
3.
4.
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   
5.
6.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
7.
8.
9.
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   

10.

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   
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