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   3093篇
  免费   298篇
  国内免费   16篇
耳鼻咽喉   18篇
儿科学   150篇
妇产科学   46篇
基础医学   316篇
口腔科学   58篇
临床医学   237篇
内科学   725篇
皮肤病学   118篇
神经病学   295篇
特种医学   160篇
外国民族医学   1篇
外科学   565篇
综合类   83篇
一般理论   2篇
预防医学   219篇
眼科学   75篇
药学   160篇
中国医学   14篇
肿瘤学   165篇
  2023年   18篇
  2022年   12篇
  2021年   99篇
  2020年   43篇
  2019年   69篇
  2018年   94篇
  2017年   70篇
  2016年   79篇
  2015年   73篇
  2014年   104篇
  2013年   148篇
  2012年   219篇
  2011年   185篇
  2010年   108篇
  2009年   134篇
  2008年   151篇
  2007年   167篇
  2006年   146篇
  2005年   139篇
  2004年   121篇
  2003年   100篇
  2002年   88篇
  2001年   90篇
  2000年   90篇
  1999年   87篇
  1998年   62篇
  1997年   62篇
  1996年   45篇
  1995年   31篇
  1994年   52篇
  1993年   46篇
  1992年   49篇
  1991年   31篇
  1990年   46篇
  1989年   49篇
  1988年   44篇
  1987年   27篇
  1986年   33篇
  1985年   23篇
  1984年   24篇
  1983年   13篇
  1982年   16篇
  1981年   20篇
  1980年   20篇
  1979年   10篇
  1978年   7篇
  1977年   13篇
  1976年   17篇
  1973年   6篇
  1969年   4篇
排序方式: 共有3407条查询结果,搜索用时 31 毫秒
1.
2.
3.
Purpose

Robotic approaches have been steadily replacing laparoscopic approaches in metabolic and bariatric surgeries (MBS); however, their superiority has not been rigorously evaluated. The main goal of the study was to evaluate the 5-year utilization trends of robotic MBS and to compare to laparoscopic outcomes.

Methods

Retrospective analysis of 2015–2019 MBSAQIP data. Kruskal-Wallis test/Wilcoxon and Fisher’s exact/chi-square were used to compare continuous and categorical variables, respectively. Generalized linear models were used to compare surgery outcomes.

Results

The use of robotic MBS increased from 6.2% in 2015 to 13.5% in 2019 (N= 775,258). Robotic MBS patients had significantly higher age, BMI, and likelihood of 12 diseases compared to laparoscopic patients. After adjustment, robotic MBS patients showed higher 30-day interventions and 30-day readmissions alongside longer surgery time (26–38 min).

Conclusion

Robotic MBS shows higher intervention and readmission even after controlling for cofounding variables.

Graphical Abstract
  相似文献   
4.
OBJECTIVE: Nocturnal enuresis is a common pediatric problem, the etiology of which is unclear. In recent years, various studies have been published stating that children with nocturnal enuresis exhibit growth and skeletal maturation retardation. METHODS: In this cross-sectional study, we included 27 patients (16 boys, 11 girls) between the ages of 6 and 14 years who had presented with primary nocturnal enuresis (PNE) complaints. We included in the evaluation 19 healthy subjects (12 boys, 7 girls), who were the siblings of the children with PNE, as the control group. RESULTS: The patients in both groups were similar in chronological age, bone age, height and weight, with no significant difference between groups (P>0.05). CONCLUSION: The two groups in our study consisted of the same genetic background. Thus, our results were found to be different from the previous studies. We have concluded that there is no direct relationship between enuresis nocturnal and skeletal maturation.  相似文献   
5.
6.
Acquired supravalvar membranous stenosis of the left atrioventricular valve   总被引:1,自引:0,他引:1  
Acquired supravalvar membranous stenosis of the left atrioventricular valve developed in a nine year old boy with atrioventricular discordance. The supravalvar membrane had not been present when a partial annuloplasty was performed on the left atrioventricular valve eight years before. The stenosis was relieved by operative excision of the membrane.  相似文献   
7.
A case is described of a subarachnoid-pleural fistula developing after resection of an intrathoracic benign nerve sheath tumor near the eleventh thoracic vertebra. The fistula was demonstrated by myelography and was corrected surgically. Of 12 previously reported cases, 11 occurred after trauma and one after an operation.  相似文献   
8.
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