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   234879篇
  免费   10031篇
  国内免费   501篇
耳鼻咽喉   3330篇
儿科学   6755篇
妇产科学   5457篇
基础医学   33342篇
口腔科学   8096篇
临床医学   13798篇
内科学   53091篇
皮肤病学   6792篇
神经病学   19112篇
特种医学   5676篇
外国民族医学   2篇
外科学   27404篇
综合类   1142篇
一般理论   50篇
预防医学   27178篇
眼科学   5943篇
药学   17889篇
中国医学   1037篇
肿瘤学   9317篇
  2023年   1220篇
  2022年   1006篇
  2021年   3830篇
  2020年   2157篇
  2019年   4370篇
  2018年   7466篇
  2017年   4588篇
  2016年   4489篇
  2015年   5029篇
  2014年   5732篇
  2013年   8764篇
  2012年   14956篇
  2011年   15874篇
  2010年   7990篇
  2009年   5796篇
  2008年   13018篇
  2007年   14013篇
  2006年   13261篇
  2005年   12889篇
  2004年   11744篇
  2003年   11049篇
  2002年   10524篇
  2001年   7100篇
  2000年   7977篇
  1999年   6115篇
  1998年   1066篇
  1992年   2995篇
  1991年   2613篇
  1990年   2518篇
  1989年   2126篇
  1988年   2002篇
  1987年   1881篇
  1986年   1908篇
  1985年   1768篇
  1984年   1282篇
  1983年   1079篇
  1979年   1386篇
  1978年   910篇
  1977年   885篇
  1976年   867篇
  1975年   1020篇
  1974年   1316篇
  1973年   1380篇
  1972年   1290篇
  1971年   1267篇
  1970年   1174篇
  1969年   1244篇
  1968年   1269篇
  1967年   1122篇
  1966年   997篇
排序方式: 共有10000条查询结果,搜索用时 31 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