全文获取类型
收费全文 | 3031篇 |
免费 | 388篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 38篇 |
儿科学 | 146篇 |
妇产科学 | 46篇 |
基础医学 | 273篇 |
口腔科学 | 55篇 |
临床医学 | 399篇 |
内科学 | 810篇 |
皮肤病学 | 74篇 |
神经病学 | 254篇 |
特种医学 | 368篇 |
外科学 | 394篇 |
综合类 | 45篇 |
一般理论 | 1篇 |
预防医学 | 248篇 |
眼科学 | 38篇 |
药学 | 118篇 |
中国医学 | 1篇 |
肿瘤学 | 152篇 |
出版年
2023年 | 54篇 |
2022年 | 18篇 |
2021年 | 42篇 |
2020年 | 100篇 |
2019年 | 26篇 |
2018年 | 103篇 |
2017年 | 78篇 |
2016年 | 78篇 |
2015年 | 70篇 |
2014年 | 116篇 |
2013年 | 139篇 |
2012年 | 106篇 |
2011年 | 93篇 |
2010年 | 101篇 |
2009年 | 125篇 |
2008年 | 78篇 |
2007年 | 109篇 |
2006年 | 83篇 |
2005年 | 77篇 |
2004年 | 69篇 |
2003年 | 56篇 |
2002年 | 60篇 |
2001年 | 64篇 |
2000年 | 54篇 |
1999年 | 63篇 |
1998年 | 100篇 |
1997年 | 104篇 |
1996年 | 89篇 |
1995年 | 71篇 |
1994年 | 56篇 |
1993年 | 60篇 |
1992年 | 61篇 |
1991年 | 45篇 |
1990年 | 70篇 |
1989年 | 80篇 |
1988年 | 70篇 |
1987年 | 58篇 |
1986年 | 51篇 |
1985年 | 53篇 |
1984年 | 33篇 |
1983年 | 30篇 |
1982年 | 26篇 |
1981年 | 24篇 |
1980年 | 21篇 |
1979年 | 32篇 |
1978年 | 21篇 |
1977年 | 21篇 |
1976年 | 18篇 |
1972年 | 19篇 |
1971年 | 28篇 |
排序方式: 共有3460条查询结果,搜索用时 15 毫秒
81.
82.
Mumun Sinha MD Niraj N. Pandey MD S. H. Chandrashekhara MD Arun Sharma DM 《Journal of cardiac surgery》2020,35(7):1644-1646
We present a case of cyanotic congenital heart disease with left common carotid artery agenesis in the setting of the right aortic arch highlighting the potential implications in management. 相似文献
83.
84.
Sachin Talwar MS MCh Niwin George MS MCh Shyam Sunder Kothari MD DM Abhishek Sharma MS Keerthi Goondla MS Shiv Kumar Choudhary MS MCh 《Journal of cardiac surgery》2020,35(7):1690-1693
Rupture of sinus of valsalva following repair of tetralogy of fallot (TOF) is very rare. It should be suspected as a cause of recurrent or prolonged pleural effusion and congestive cardiac failure in patients who have undergone repair of TOF. We report one such patient. 相似文献
85.
Vineeta Ojha MD Sh Chandrashekhara DM Amarinder Singh Malhi DM Sanjeev Kumar MD 《Journal of cardiac surgery》2020,35(6):1340-1341
We present images from computed tomography angiography in a 40-year-old female with a calcified pseudo-aneurysm in her left coronary artery, who had previously undergone repair of tetralogy of Fallot. 相似文献
86.
Niraj Nirmal Pandey DM Mumun Sinha MD Sanjeev Kumar MD 《Journal of cardiac surgery》2020,35(7):1624-1625
We present a case of type B aortic dissection with a rare aortic arch branching variation whereby two separate brachiocephalic trunks arise from the arch. This case also highlights the potential implications of this variant in the management of thoracic aortic dissections and aneurysms. 相似文献
87.
88.
MJ Hwang A Bhangu CE Webster DM Bowley MX Gannon SS Karandikar 《Annals of the Royal College of Surgeons of England》2014,96(5):343-347
Introduction
In 2009 the Department of Health instructed McKinsey & Company to provide advice on how commissioners might achieve world class National Health Service productivity. Asymptomatic inguinal hernia repair was identified as a potentially cosmetic procedure, with limited clinical benefit. The Birmingham and Solihull primary care trust cluster introduced a policy of watchful waiting for asymptomatic inguinal hernia, which was implemented across the health economy in December 2010. This retrospective cohort study aimed to examine the effect of a change in clinical commissioning policy concerning elective surgical repair of asymptomatic inguinal hernias.Methods
A total of 1,032 patients undergoing inguinal hernia repair in the 16 months after the policy change were compared with 978 patients in the 16 months before. The main outcome measure was relative proportion of emergency repair in groups before and after the policy change. Multivariate binary logistic regression was used to adjust the main outcome for age, sex and hernia type.Results
The period after the policy change was associated with 59% higher odds of emergency repair (3.6% vs 5.5%, adjusted odds ratio [OR]: 1.59, 95% confidence interval [CI]: 1.03–2.47). In turn, emergency repair was associated with higher odds of adverse events (4.7% vs 18.5%, adjusted OR: 3.68, 95% CI: 2.04–6.63) and mortality (0.1% vs 5.4%, p<0.001, Fisher’s exact test).Conclusions
Introduction of a watchful waiting policy for asymptomatic inguinal hernias was associated with a significant increase in need for emergency repair, which was in turn associated with an increased risk of adverse events. Current policies may be placing patients at risk. 相似文献89.
Andre C. Felicio MD PhD Katherine Dinelle MSc Pankaj A. Agarwal MD DNB DM Jessamyn McKenzie LPN Nicole Heffernan RN Jeremy D. Road MD Silke Appel‐Cresswell MD Zbigniew K. Wszolek MD Matthew J. Farrer PhD Michael Schulzer MD PhD Vesna Sossi PhD A. Jon Stoessl CM MD FRCPC 《Movement disorders》2014,29(9):1197-1201
90.