全文获取类型
收费全文 | 224篇 |
免费 | 19篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 4篇 |
妇产科学 | 1篇 |
基础医学 | 17篇 |
口腔科学 | 16篇 |
临床医学 | 23篇 |
内科学 | 56篇 |
皮肤病学 | 4篇 |
神经病学 | 9篇 |
特种医学 | 17篇 |
外科学 | 56篇 |
综合类 | 3篇 |
预防医学 | 14篇 |
药学 | 14篇 |
肿瘤学 | 10篇 |
出版年
2023年 | 2篇 |
2022年 | 16篇 |
2021年 | 18篇 |
2020年 | 8篇 |
2019年 | 19篇 |
2018年 | 14篇 |
2017年 | 12篇 |
2016年 | 13篇 |
2015年 | 12篇 |
2014年 | 13篇 |
2013年 | 9篇 |
2012年 | 9篇 |
2011年 | 15篇 |
2010年 | 10篇 |
2009年 | 7篇 |
2008年 | 12篇 |
2007年 | 14篇 |
2006年 | 15篇 |
2005年 | 8篇 |
2004年 | 2篇 |
2003年 | 7篇 |
2002年 | 8篇 |
1997年 | 1篇 |
排序方式: 共有244条查询结果,搜索用时 15 毫秒
1.
2.
3.
Estimating seroprevalence of herpes simplex virus type 1 among different Middle East and North African male populations residing in Qatar 下载免费PDF全文
Gheyath K. Nasrallah PhD Soha R. Dargham MPH Layla I. Mohammed BSc Laith J. Abu‐Raddad PhD 《Journal of medical virology》2018,90(1):184-190
HSV‐1 epidemiology in the Middle East and North Africa (MENA) remains poorly understood. Our study aimed to measure HSV‐1 antibody prevalence (seroprevalence) and its age‐distribution among select MENA populations residing in Qatar. Sera were collected from male blood donors attending Hamad Medical Corporation 2013‐2015. A total of 2,077 sera were tested for anti‐HSV‐1 antibodies using HerpeSelect® 1 ELISA IgG kits (Focus Diagnostics, Cypress, CA). Robust Poisson regression was conducted to estimate adjusted infection prevalence ratios. Country‐specific HSV‐1 seroprevalence was estimated for 10 national populations: 97.5% among Egyptians, 92.6% among Yemenis, 90.7% among Sudanese, 88.5% among Syrians, 86.5% among Jordanians, 82.3% among Qataris, 81.4% among Iranians, 81.4% among Lebanese, 80.5% among Palestinians, and 77.0% among Pakistanis. Age‐specific HSV‐1 seroprevalence was estimated for Egypt, the Fertile Crescent (Iraq, Jordan, Lebanon, Palestine, and Syria), and Qatar. Seroprevalence increased with age among Fertile Crescent and Qatari nationals. Seroprevalence increased from 70.0% among those aged ≤ 24 years up to 98.0% among those aged ≥55 years among Fertile Crescent nationals. Seroprevalence was consistently above 90% for all ages among Egyptians. HSV‐1 seroprevalence is high in MENA, though with some variation across countries. The seroprevalence appears to have declined among current young age cohorts compared to its levels a few decades ago. 相似文献
4.
5.
Madigan Cory G. Adams Michael B. Chu Chu-Chiao Dinkha Laith R. Farrell Samuel J. Hoard Robert T. Keithler Andrea N. Loudermilk Kevin A. Rouse Jessica Walker Brandon L. Williams Susan G. Wyatt Andrew C. Gore Rosco S. Thomas Dustin M. 《The international journal of cardiovascular imaging》2021,37(12):3583-3588
The International Journal of Cardiovascular Imaging - To compare overall number of downstream tests and total costs between negative exercise stress echocardiograms (ESE) or cardiac computed... 相似文献
6.
7.
8.
9.
10.
Donald J. Ferguson Dalal Al Rossais M. Thomas Wilcko Laith Makki Roelien Stapelberg 《The Angle orthodontist》2019,89(5):697
Objectives:To compare forced-eruption times for palatally impacted canines treated with and without the ostectomy-decortication technique and to assess the influence of palatally impacted canine pretreatment position and angle on forced-eruption time.Materials and Methods:The sample was composed of 118 patient-subjects with 151 palatally impacted canines treated with the ostectomy-decortication technique (n = 72) and without (n = 79). The orthopantomogram radiographs (OPGs) were analyzed for palatally impacted canine angle and horizontal and vertical position. Recovery time was measured from the start of forced eruption until the canine was within ±1 mm of final dental arch position.Results:The time of forced canine eruption with ostectomy-decortication technique was significantly shorter than without (6.6 vs 21.0 months). Pretreatment canine position significantly increased forced-eruption time in the ostectomy-decortication group but not in the control sample.Conclusions:Forced-eruption time of palatally impacted canines using the ostectomy-decortication technique was 3.2 times more rapid than without. Forced-eruption time increased significantly as a function of pretreatment palatally impacted canine position severity in the ostectomy-decortication group but not in the control. 相似文献