首页 | 官方网站   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   17400篇
  免费   1333篇
  国内免费   66篇
医药卫生   18799篇
  2023年   215篇
  2022年   159篇
  2021年   614篇
  2020年   465篇
  2019年   582篇
  2018年   757篇
  2017年   509篇
  2016年   604篇
  2015年   669篇
  2014年   824篇
  2013年   1109篇
  2012年   1630篇
  2011年   1600篇
  2010年   811篇
  2009年   760篇
  2008年   1162篇
  2007年   1176篇
  2006年   1025篇
  2005年   947篇
  2004年   825篇
  2003年   752篇
  2002年   712篇
  2001年   85篇
  2000年   46篇
  1999年   67篇
  1998年   90篇
  1997年   77篇
  1996年   53篇
  1995年   51篇
  1994年   48篇
  1993年   56篇
  1992年   37篇
  1991年   24篇
  1990年   21篇
  1989年   17篇
  1988年   7篇
  1987年   8篇
  1986年   18篇
  1985年   16篇
  1984年   18篇
  1983年   14篇
  1982年   22篇
  1981年   12篇
  1980年   9篇
  1979年   8篇
  1978年   10篇
  1977年   9篇
  1971年   8篇
  1969年   6篇
  1967年   7篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
During first outburst of COVID-19, several strategies had been applied for surgical oncology patients to minimize COVID-19 transmission. COVID-19 infection seemed to compromise survival and major complication rates of surgical oncology patients. However, survival, tumor progression and recurrence rates of surgical oncology patients were associated to the consequences of COVID-19 pandemic on their management. In addition, the severity of COVID-19 infections has been downgraded. Therefore, management of surgical oncology patients should be reconsidered.  相似文献   
2.
3.
4.
5.

Objective

To develop a Vaccine Confidence Index (VCI) that is capable of detecting variations in parental confidence towards childhood immunizations centered on trust and concern issues that impact vaccine confidence.

Methods

We used a web-based national poll of 893 parents of children <7?years in 2016 to assess the measures created for the Emory VCI (EVCI). EVCI measures were developed using constructs related to vaccine confidence identified by the U.S. National Vaccine Advisory Committee (i.e., “Information Environment”, “Trust”, “Healthcare Provider”, “Attitudes and Beliefs”, and “Social Norms”). Reliability for EVCI was assessed using Cronbach’s alpha. Using the variables related to each of the constructs, we calculated an overall EVCI score that was then assessed against self-reported childhood vaccine receipt using chi-square and the Cochrane-Armitage trend tests.

Results

Respondents’ EVCI scores could range from 0 to 24, and the full range of values was observed in this sample (Mean?=?17.5 (SD 4.8)). EVCI scores were significantly different (p?≤?0.006 for all comparisons) between parents who indicated their child(ren) received routinely recommended vaccines compared with parents who indicated they had delayed or declined recommended immunizations. There was also a significant, consistent association between higher EVCI scores and greater reported vaccine receipt.

Conclusions

We developed EVCI to reliably measure parental vaccine confidence, with individuals’ scores linked to parental vaccine-related attitudes, intentions, and behaviors. As such, EVCI may be a useful tool for future monitoring of both population and individual confidence in childhood immunization.  相似文献   
6.
7.
8.
European Journal of Nuclear Medicine and Molecular Imaging - Imaging studies of cobalt toxicity from cobalt-chromium alloy arthroprosthetics have focused on the local intra-articular and...  相似文献   
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-23

京公网安备 11010802026262号