全文获取类型
收费全文 | 427篇 |
免费 | 142篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 15篇 |
妇产科学 | 10篇 |
基础医学 | 14篇 |
口腔科学 | 9篇 |
临床医学 | 51篇 |
内科学 | 149篇 |
皮肤病学 | 18篇 |
神经病学 | 73篇 |
特种医学 | 13篇 |
外科学 | 118篇 |
综合类 | 4篇 |
预防医学 | 32篇 |
眼科学 | 10篇 |
药学 | 4篇 |
肿瘤学 | 39篇 |
出版年
2024年 | 2篇 |
2023年 | 42篇 |
2022年 | 16篇 |
2021年 | 21篇 |
2020年 | 28篇 |
2019年 | 16篇 |
2018年 | 44篇 |
2017年 | 31篇 |
2016年 | 32篇 |
2015年 | 37篇 |
2014年 | 43篇 |
2013年 | 42篇 |
2012年 | 25篇 |
2011年 | 17篇 |
2010年 | 27篇 |
2009年 | 46篇 |
2008年 | 10篇 |
2007年 | 11篇 |
2006年 | 7篇 |
2005年 | 5篇 |
2004年 | 4篇 |
2003年 | 1篇 |
2002年 | 4篇 |
2001年 | 4篇 |
2000年 | 9篇 |
1999年 | 6篇 |
1998年 | 11篇 |
1997年 | 9篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有572条查询结果,搜索用时 15 毫秒
1.
2.
A Parasyn R M Hanson MBBCh MPH MRACMA FRACP FACEM J K Peat M De Silva 《Journal of digital imaging》1998,11(1):45-49
Picture Archiving and Communication Systems (PACS) make possible the viewing of radiographic images on computer workstations located where clinical care is delivered. By the nature of their work this feature is particularly useful for emergency physicians who view radiographic studies for information and use them to explain results to patients and their families. However, the high cost of PACS diagnostic workstations with fuller functionality places limits on the number of and therefore the accessibility to workstations in the emergency department. This study was undertaken to establish how well less expensive personal computer-based workstations would work to support these needs of emergency physicians. The study compared the outcome of observations by 5 emergency physicians on a series of radiographic studies containing subtle abnormalities displayed on both a PACS diagnostic workstation and on a PC-based workstation. The 73 digitized radiographic studies were randomly arranged on both types of workstation over four separate viewing sessions for each emergency physician. There was no statistical difference between a PACS diagnostic workstation and a PC-based workstation in this trial. The mean correct ratings were 59% on the PACS diagnostic workstations and 61% on the PC-based workstations. These findings also emphasize the need for prompt reporting by a radiologist. 相似文献
3.
A novel method to measure mitral valve area in patients with rheumatic mitral stenosis using three‐dimensional transesophageal echocardiography: Feasibility and validation
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
4.
5.
6.
7.
8.
9.
10.
Ahmad Adebayo Irekeola Engku Nur Syafirah E.A.R. Yusuf Wada Rohimah Mohamud Norhafiza Mat Lazim Chan Yean Yean Rafidah Hanim Shueb 《Indian journal of medical microbiology》2022,40(3):420-426
BackgroundEpstein-Barr virus (EBV) is a member of the herpesvirus family that is known to ubiquitously infect people worldwide. However, the actual prevalence of EBV infection in diseased patients in Nigeria, remains unknown. This study was thus conducted to ascertain the true prevalence.MethodsA systematic review and meta-analysis of published data was conducted according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). Electronic databases including PubMed, Scopus, ScienceDirect, and Google Scholar were searched for studies reporting the occurrence of EBV infection among patients with established diseases. Studies were included if they assessed EBV infection in diseased patients in Nigeria. Data were extracted and subsequently analysed using R software. Funnel plot and Egger's regression test was used to assess publication bias, while JBI prevalence tool was used to assess study quality.ResultsA total of 13 studies covering 228 cases of EBV infection among 1157 diseased patients were included. Summary estimates were computed using random-effects model. The pooled prevalence of EBV infection was 20.3% (95% CI: 10.8–34.9, I2 ?= ?92.26, p ?< ?0.001). When stratified according to the type of disease, higher estimates were obtained for patients suffering from Kaposi's sarcoma (98.7%, 95% CI: 82.2–99.9) and Nasopharyngeal malignancy (85.7%, 95% CI: 70.0–93.9). A prevalence of 13.4% (95% CI: 6.0–27.4) and 12.2% (95% CI: 4.8–27.8) was derived for the most reported patient populations, lymphoma and HIV, respectively.ConclusionThis first meta-analysis on the prevalence of EBV among Nigerian patients suffering from various diseases reveals a prevalence that emphasises the need to routinely monitor EBV infection in all EBV-associated diseases in Nigeria. 相似文献