全文获取类型
| 收费全文 | 997759篇 |
| 免费 | 76922篇 |
| 国内免费 | 2618篇 |
专业分类
| 耳鼻咽喉 | 12991篇 |
| 儿科学 | 34540篇 |
| 妇产科学 | 28498篇 |
| 基础医学 | 145549篇 |
| 口腔科学 | 27944篇 |
| 临床医学 | 90381篇 |
| 内科学 | 193904篇 |
| 皮肤病学 | 22944篇 |
| 神经病学 | 79282篇 |
| 特种医学 | 38432篇 |
| 外国民族医学 | 307篇 |
| 外科学 | 149687篇 |
| 综合类 | 23764篇 |
| 一般理论 | 386篇 |
| 预防医学 | 77959篇 |
| 眼科学 | 22646篇 |
| 药学 | 72001篇 |
| 3篇 | |
| 中国医学 | 2029篇 |
| 肿瘤学 | 54052篇 |
出版年
| 2018年 | 10580篇 |
| 2017年 | 8258篇 |
| 2016年 | 9396篇 |
| 2015年 | 10613篇 |
| 2014年 | 14446篇 |
| 2013年 | 22039篇 |
| 2012年 | 29042篇 |
| 2011年 | 30886篇 |
| 2010年 | 18518篇 |
| 2009年 | 17480篇 |
| 2008年 | 28844篇 |
| 2007年 | 30518篇 |
| 2006年 | 31023篇 |
| 2005年 | 29699篇 |
| 2004年 | 28994篇 |
| 2003年 | 27852篇 |
| 2002年 | 26873篇 |
| 2001年 | 46970篇 |
| 2000年 | 48092篇 |
| 1999年 | 40306篇 |
| 1998年 | 11191篇 |
| 1997年 | 10120篇 |
| 1996年 | 10176篇 |
| 1995年 | 9794篇 |
| 1994年 | 9110篇 |
| 1993年 | 8496篇 |
| 1992年 | 32320篇 |
| 1991年 | 31497篇 |
| 1990年 | 31069篇 |
| 1989年 | 29933篇 |
| 1988年 | 27214篇 |
| 1987年 | 27376篇 |
| 1986年 | 25470篇 |
| 1985年 | 24650篇 |
| 1984年 | 18430篇 |
| 1983年 | 15543篇 |
| 1982年 | 9320篇 |
| 1981年 | 8392篇 |
| 1979年 | 16905篇 |
| 1978年 | 12252篇 |
| 1977年 | 10338篇 |
| 1976年 | 9784篇 |
| 1975年 | 10203篇 |
| 1974年 | 12364篇 |
| 1973年 | 11875篇 |
| 1972年 | 10920篇 |
| 1971年 | 10143篇 |
| 1970年 | 9394篇 |
| 1969年 | 8743篇 |
| 1968年 | 8114篇 |
排序方式： 共有10000条查询结果，搜索用时 140 毫秒
51.
Changhyun Kim B.S. Brittany G. Craiglow M.D. Kalman L. Watsky M.D. Richard J. Antaya M.D. 《Pediatric dermatology》2015,32(4):e161-e162
A 17‐year‐old boy presented with recurring severe dermatitis of the face of 5‐months duration that resembled impetigo. He had been treated with several courses of antibiotics without improvement. Biopsy showed changes consistent with allergic contact dermatitis and patch testing later revealed sensitization to benzoyl peroxide, which the patient had been using for the treatment of acne vulgaris. 相似文献
52.
Assessment of Myocardial Infarct Size by Three‐Dimensional and Two‐Dimensional Speckle Tracking Echocardiography: A Comparative Study to Single Photon Emission Computed Tomography 
下载免费PDF全文
下载免费PDF全文 53.
54.
55.
56.
57.
Stelter K. Theodoraki M. N. Becker S. Tsekmistrenko V. Olzowy B. Ledderose G. 《European archives of oto-rhino-laryngology》2015,272(3):639-639
European Archives of Oto-Rhino-Laryngology - 相似文献
58.
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59.