全文获取类型
收费全文 | 1336865篇 |
免费 | 114682篇 |
国内免费 | 6369篇 |
专业分类
耳鼻咽喉 | 16707篇 |
儿科学 | 43023篇 |
妇产科学 | 36565篇 |
基础医学 | 183716篇 |
口腔科学 | 36275篇 |
临床医学 | 120743篇 |
内科学 | 278646篇 |
皮肤病学 | 31898篇 |
神经病学 | 110555篇 |
特种医学 | 55575篇 |
外国民族医学 | 274篇 |
外科学 | 210388篇 |
综合类 | 31527篇 |
现状与发展 | 2篇 |
一般理论 | 415篇 |
预防医学 | 106673篇 |
眼科学 | 28090篇 |
药学 | 93738篇 |
5篇 | |
中国医学 | 2228篇 |
肿瘤学 | 70873篇 |
出版年
2018年 | 13388篇 |
2017年 | 10639篇 |
2016年 | 12805篇 |
2015年 | 14307篇 |
2014年 | 19965篇 |
2013年 | 29754篇 |
2012年 | 36267篇 |
2011年 | 38918篇 |
2010年 | 24387篇 |
2009年 | 23922篇 |
2008年 | 36403篇 |
2007年 | 38804篇 |
2006年 | 39921篇 |
2005年 | 38520篇 |
2004年 | 36764篇 |
2003年 | 35853篇 |
2002年 | 33844篇 |
2001年 | 66066篇 |
2000年 | 67932篇 |
1999年 | 56600篇 |
1998年 | 16731篇 |
1997年 | 15022篇 |
1996年 | 16018篇 |
1995年 | 16234篇 |
1994年 | 15104篇 |
1993年 | 14159篇 |
1992年 | 47108篇 |
1991年 | 45752篇 |
1990年 | 43980篇 |
1989年 | 41825篇 |
1988年 | 38775篇 |
1987年 | 38092篇 |
1986年 | 35865篇 |
1985年 | 34640篇 |
1984年 | 26362篇 |
1983年 | 22113篇 |
1982年 | 13851篇 |
1981年 | 12449篇 |
1980年 | 11721篇 |
1979年 | 23548篇 |
1978年 | 17073篇 |
1977年 | 14386篇 |
1976年 | 13183篇 |
1975年 | 13723篇 |
1974年 | 16093篇 |
1973年 | 15396篇 |
1972年 | 14174篇 |
1971年 | 13036篇 |
1970年 | 11880篇 |
1969年 | 11102篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
Haya Mohammed BSc MChB M. Yousuf Salmasi MRCS Massimo Caputo PhD Gianni D. Angelini PhD Hunaid A. Vohra PhD 《Journal of cardiac surgery》2020,35(6):1209-1219
Background
Limited data exists demonstrating the efficacy of minimally invasive surgery (MIS) compared to median sternotomy (MS) for multiple valvular disease (MVD). This systematic review and meta-analysis aims to compare operative and peri-operative outcomes of MIS vs MS in MVD.Methods
PubMed, Ovid, and Embase were searched from inception until August 2019 for randomized and observational studies comparing MIS and MS in patients with MVD. Clinical outcomes of intra- and postoperative times, reoperation for bleeding and surgical site infection were evaluated.Results
Five observational studies comparing 340 MIS vs 414 MS patients were eligible for qualitative and quantitative review. The quality of evidence assessed using the Newcastle-Ottawa scale was good for all included studies. Meta-analysis demonstrated increased cardiopulmonary bypass time for MIS patients (weighted mean difference [WMD], 0.487; 95% confidence interval [CI], 0.365-0.608; P < .0001). Similarly, aortic cross-clamp time was longer in patients undergoing MIS (WMD, 0.632; 95% CI, 0.509-0.755; P < .0001). No differences were found in operative mortality, reoperation for bleeding, surgical site infection, or hospital stay.Conclusions
MIS for MVD have similar short-term outcomes compared to MS. This adds value to the use of minimally invasive methods for multivalvular surgery, despite conferring longer operative times. However, the paucity in literature and learning curve associated with MIS warrants further evidence, ideally randomized control trials, to support these findings.84.
F. Giovanardi F. Nudo Q. Lai M. Garofalo A. Consolo E. Choppin De Janvry G.A. Arroyo Murillo P. Ursi D. Stabile F. Melandro P.B. Berloco R. Pretagostini L. Poli 《Transplantation proceedings》2019,51(1):128-131
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85.
Are Dermatophytid Reactions in Patients with Kerion Celsi Much More Common Than Previously Thought? A Prospective Study
下载免费PDF全文
![点击此处可从《Pediatric dermatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Dermatophytid reactions are secondary eruptions in response to dermatophytosis. Only a few cases demonstrating an association between dermatophytid reactions and tinea capitis have been reported. Dermatophytid reactions were evaluated in patients diagnosed with kerion celsi. Patients admitted to the dermatology clinic of Van Regional Training and Research Hospital between November 22, 2012, and July 1, 2013, diagnosed with kerion celsi were evaluated for dermatophytid reactions. Six girls (32%) and 13 boys (68%) were included in this study. Dermatophytid reactions were detected in 13 of the 19 patients (68%). Seven patients (36.84%) had eczematous patches or plaques and three (15.8%) had papules. Eczematous lesions, papules, and pustules were noted in two patients (10.5%) and one (5.3%) had signs of an angioedema‐like reaction. Dermatophytid reactions in all patients were observed before the initiation of therapy. According to our clinical experiences, dermatophytid reactions in patients with kerion celsi were more common than reported. Eczematous scaly patches or plaques were the most frequently seen forms of dermatophytid in patients with kerion celsi. Dermatophytid reactions may occur before or after initiation of systemic antifungal therapy. Recognition of this reaction is important so that dermatophytids can be distinguished from drug reactions and the decision can be made whether to continue or to stop the systemic antifungal treatment. 相似文献
86.
87.
88.
89.
Tselios Konstantinos Yap Kristy Su-Ying Pakchotanon Rattapol Polachek Ari Su Jiandong Urowitz Murray B. Gladman Dafna D. 《Clinical rheumatology》2019,38(1):269-269
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
90.