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   175236篇
  免费   7452篇
  国内免费   381篇
耳鼻咽喉   2286篇
儿科学   5136篇
妇产科学   4216篇
基础医学   25368篇
口腔科学   5597篇
临床医学   10552篇
内科学   38593篇
皮肤病学   4733篇
神经病学   14586篇
特种医学   4166篇
外国民族医学   1篇
外科学   19883篇
综合类   868篇
一般理论   40篇
预防医学   21080篇
眼科学   4433篇
药学   13550篇
中国医学   706篇
肿瘤学   7275篇
  2023年   871篇
  2022年   841篇
  2021年   2956篇
  2020年   1673篇
  2019年   3317篇
  2018年   5202篇
  2017年   3249篇
  2016年   3297篇
  2015年   3643篇
  2014年   4255篇
  2013年   6436篇
  2012年   10774篇
  2011年   11389篇
  2010年   5736篇
  2009年   4329篇
  2008年   9281篇
  2007年   9992篇
  2006年   9548篇
  2005年   9170篇
  2004年   8493篇
  2003年   7975篇
  2002年   7562篇
  2001年   5075篇
  2000年   5578篇
  1999年   4294篇
  1998年   911篇
  1992年   2315篇
  1991年   2065篇
  1990年   2049篇
  1989年   1753篇
  1988年   1652篇
  1987年   1555篇
  1986年   1597篇
  1985年   1483篇
  1984年   1084篇
  1983年   925篇
  1979年   1233篇
  1978年   829篇
  1977年   801篇
  1976年   763篇
  1975年   891篇
  1974年   1141篇
  1973年   1188篇
  1972年   1132篇
  1971年   1099篇
  1970年   1023篇
  1969年   1091篇
  1968年   1120篇
  1967年   984篇
  1966年   890篇
排序方式: 共有10000条查询结果,搜索用时 0 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.
7.
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   

8.
9.
10.
In the current immunosuppressive therapy era, vessel thrombosis is the most common cause of early graft loss after renal transplantation. The prevalence of IgA anti–β2-glycoprotein I antibodies (IgA-aB2GPI-ab) in patients on dialysis is elevated (>30%), and these antibodies correlate with mortality and cardiovascular morbidity. To evaluate the effect of IgA-aB2GPI-ab in patients with transplants, we followed all patients transplanted from 2000 to 2002 in the Hospital 12 de Octubre prospectively for 10 years. Presence of IgA-aB2GPI-ab in pretransplant serum was examined retrospectively. Of 269 patients, 89 patients were positive for IgA-aB2GPI-ab (33%; group 1), and the remaining patients were negative (67%; group 2). Graft loss at 6 months post-transplant was significantly higher in group 1 (10 of 89 versus 3 of 180 patients in group 2; P=0.002). The most frequent cause of graft loss was thrombosis of the vessels, which was observed only in group 1 (8 of 10 versus 0 of 3 patients in group 2; P=0.04). Multivariate analysis showed that the presence of IgA-aB2GPI-ab was an independent risk factor for early graft loss (P=0.04) and delayed graft function (P=0.04). There were no significant differences regarding patient survival between the two groups. Graft survival was similar in both groups after 6 months. In conclusion, patients with pretransplant IgA-aB2GPI-ab have a high risk of early graft loss caused by thrombosis and a high risk of delayed graft function. Therefore, pretransplant IgA-aB2GPI-ab may have a detrimental effect on early clinical outcomes after renal transplantation.  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