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   1095838篇
  免费   82557篇
  国内免费   3881篇
耳鼻咽喉   14353篇
儿科学   36972篇
妇产科学   32021篇
基础医学   160594篇
口腔科学   30813篇
临床医学   98133篇
内科学   211556篇
皮肤病学   24946篇
神经病学   85846篇
特种医学   41710篇
外国民族医学   308篇
外科学   163473篇
综合类   28215篇
一般理论   416篇
预防医学   85134篇
眼科学   25098篇
药学   80426篇
  3篇
中国医学   2751篇
肿瘤学   59508篇
  2018年   11889篇
  2017年   9176篇
  2016年   10323篇
  2015年   11753篇
  2014年   15972篇
  2013年   24020篇
  2012年   31881篇
  2011年   33976篇
  2010年   20373篇
  2009年   19128篇
  2008年   31600篇
  2007年   33469篇
  2006年   33917篇
  2005年   32275篇
  2004年   31413篇
  2003年   30065篇
  2002年   29017篇
  2001年   52363篇
  2000年   53699篇
  1999年   44873篇
  1998年   12731篇
  1997年   11279篇
  1996年   10917篇
  1995年   10507篇
  1994年   9741篇
  1993年   9127篇
  1992年   35338篇
  1991年   34614篇
  1990年   33974篇
  1989年   32873篇
  1988年   30091篇
  1987年   30086篇
  1986年   28068篇
  1985年   27162篇
  1984年   20145篇
  1983年   17026篇
  1982年   10139篇
  1981年   9073篇
  1979年   18482篇
  1978年   13221篇
  1977年   11171篇
  1976年   10562篇
  1975年   11246篇
  1974年   13532篇
  1973年   13096篇
  1972年   12097篇
  1971年   11224篇
  1970年   10413篇
  1969年   9723篇
  1968年   9024篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
65.

Background

Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.

Methods

During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.

Results

No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.

Conclusions

The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach.  相似文献   
66.
BackgroundThe measurement of health-related quality of life (HRQoL) provides information about the perceived burden of the health condition and treatments from a lived experience. The Brisbane Burn Scar Impact Profile (caregiver report for young children, BBSIP0–8), developed in 2013, is a proxy-report measure of burn scar-specific HRQoL. The aim of this study was to report its psychometric properties in line with an evaluative purpose.MethodsCaregivers of children up to 8 years of age at risk of burn scarring were recruited into a prospective, longitudinal cohort study. Caregivers completed the BBSIP0–8, Pediatric Quality of Life Inventory and Patient Observer Scar Assessment Scale at baseline (approximately ≥85% of the total body surface area re-epithelialised), 1–2 weeks after baseline and 1-month after baseline. Psychometric properties measured included internal consistency, test–retest reliability, validity and responsiveness.ResultsEighty-six caregivers of mostly male children (55%), of a median age (IQR) of 1 year, 10 months (2 years, 1 month) and total body surface area burn of 1.5% (3.0%) were recruited. Over one third of participants were grafted and 15% had contractures or skin tightness at baseline. Internal consistency of ten item groups ranged from 0.73 to 0.96. Hypothesised correlations of changes in the BBSIP0–8 items with changes in criterion measures supported longitudinal validity (ρ ranging from ?0.73 to 0.68). The majority of item groups had acceptable reproducibility (ICC = 0.65–0.83). The responsiveness of five item groups was supported (AUC = 0.71–0.90).ConclusionThe psychometric properties tested support the use of the BBSIP0–8 as an evaluative measure of burn scar-related health-related quality of life for children aged below eight years in the early post-acute period of rehabilitation. Further investigation at longer time period after burn injury is indicated.  相似文献   
67.
68.
69.
70.
Clinical Rheumatology - Prof. Ari Polachek on of the author of the published version of this article missed to add his second affiliation which is the Department of Rheumatology, Tel Aviv Sourasky...  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