全文获取类型
收费全文 | 1937篇 |
免费 | 216篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 20篇 |
儿科学 | 56篇 |
妇产科学 | 31篇 |
基础医学 | 159篇 |
口腔科学 | 51篇 |
临床医学 | 272篇 |
内科学 | 401篇 |
皮肤病学 | 129篇 |
神经病学 | 71篇 |
特种医学 | 142篇 |
外科学 | 291篇 |
综合类 | 97篇 |
现状与发展 | 30篇 |
一般理论 | 1篇 |
预防医学 | 90篇 |
眼科学 | 150篇 |
药学 | 73篇 |
中国医学 | 4篇 |
肿瘤学 | 105篇 |
出版年
2024年 | 18篇 |
2023年 | 181篇 |
2022年 | 19篇 |
2021年 | 34篇 |
2020年 | 58篇 |
2019年 | 36篇 |
2018年 | 77篇 |
2017年 | 58篇 |
2016年 | 46篇 |
2015年 | 65篇 |
2014年 | 104篇 |
2013年 | 97篇 |
2012年 | 95篇 |
2011年 | 82篇 |
2010年 | 96篇 |
2009年 | 111篇 |
2008年 | 89篇 |
2007年 | 97篇 |
2006年 | 56篇 |
2005年 | 43篇 |
2004年 | 42篇 |
2003年 | 36篇 |
2002年 | 36篇 |
2001年 | 26篇 |
2000年 | 32篇 |
1999年 | 43篇 |
1998年 | 40篇 |
1997年 | 52篇 |
1996年 | 45篇 |
1995年 | 40篇 |
1994年 | 33篇 |
1993年 | 38篇 |
1992年 | 17篇 |
1991年 | 21篇 |
1990年 | 21篇 |
1989年 | 27篇 |
1988年 | 24篇 |
1987年 | 18篇 |
1986年 | 12篇 |
1985年 | 12篇 |
1984年 | 8篇 |
1982年 | 9篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1978年 | 9篇 |
1977年 | 3篇 |
1976年 | 13篇 |
1975年 | 12篇 |
1974年 | 5篇 |
1959年 | 3篇 |
排序方式: 共有2173条查询结果,搜索用时 28 毫秒
71.
Ling Wu MM Song‐Bai Deng MM Qiang She MD 《Journal of clinical hypertension (Greenwich, Conn.)》2014,16(11):838-845
To explore the clinical effects of a calcium channel blocker compared with an angiotensin II receptor blocker in hypertensive patients, the authors collected data from randomized controlled trials. The pooled outcomes were all‐cause mortality, stroke, myocardial infarction, and heart failure. Eight head‐to‐head trials enrolling 25,084 patients were included. There was no significant mortality difference in the two arms (relative risk, 0.99; 95% confidence interval, 0.91–1.07). However, calcium channel blockers were more effective in reducing stroke (relative risk, 0.87; 95% confidence interval, 0.76–0.99) and myocardial infarction incidence (relative risk, 0.86; 95% confidence interval, 0.76–0.98). There was no significant difference with heart failure incidence between the two arms but a lower trend in patients with angiotensin II receptor blockers was noted (relative risk, 1.4; 95% confidence interval, 0.99–1.98). The meta‐analysis suggested that initially use of a calcium channel blocker might be superior to an angiotensin II receptor blocker for prevention of stroke and myocardial infarction. 相似文献
72.
Carlos Jiménez-Romero Oscar Caso Maestro Félix Cambra Molero Iago Justo Alonso Cristina Alegre Torrado Alejandro Manrique Municio Jorge Calvo Pulido Carmelo Loinaz Segurola Enrique Moreno González 《World journal of gastroenterology : WJG》2014,20(31):10691-10702
The scarcity of ideal liver grafts for orthotopic liver transplantation (OLT) has led transplant teams to investigate other sources of grafts in order to augment the donor liver pool. One way to get more liver grafts is to use marginal donors, a not well-defined group which includes mainly donors > 60 years, donors with hypernatremia or macrosteatosis > 30%, donors with hepatitis C virus or hepatitis B virus positive serologies, cold ischemia time > 12 h, non-heart-beating donors, and grafts from split-livers or living-related donations. Perhaps the most practical and frequent measure to increase the liver pool, and thus to reduce waiting list mortality, is to use older livers. In the past years the results of OLT with old livers have improved, mainly due to better selection and maintenance of donors, improvements in surgical techniques in donors and recipients, and intra- and post-OLT management. At the present time, sexagenarian livers are generally accepted, but there still exists some controversy regarding the use of septuagenarian and octogenarian liver grafts. The aim of this paper is to briefly review the aging process of the liver and reported experiences using old livers for OLT. Fundamentally, the series of septuagenarian and octogenarian livers will be addressed to see if there is a limit to using these aged grafts. 相似文献
73.
74.
75.
Mice are a widely utilized in vivo model for translational salivary gland research but must be used with caution. Specifically, mouse salivary glands are similar in many ways to human salivary glands (i.e., in terms of their anatomy, histology, and physiology) and are both readily available and relatively easy and affordable to maintain. However, there are some significant differences between the two organisms, and by extension, the salivary glands derived from them must be taken into account for translational studies. The current review details pertinent similarities and differences between human and mouse salivary glands and offers practical guidelines for using both for research purposes. 相似文献
76.
Background
Cirrhosis-related complications are a major cause of morbidity and mortality in areas where its risk factors are endemic.Objective
We determined the prevalence of decompensated cirrhosis among patients on the gastroenterology service of Mulago Hospital and described the clinical and laboratory features of these patients.Methods
All patients admitted to the unit were assessed and their diagnosis documented. Patients with cirrhosis had clinical features of decompensation recorded. History of alcohol consumption was taken and testing for hepatitis B surface antigen (HBsAg) and hepatitis C antibody (anti-HCV) performed.Results
Between September 2010 and January 2011, we enrolled 482 patients. The majority (53.7%) were male, overall median age 38 years. Decompensated cirrhosis was diagnosed in 85 (17.6%) patients. Of the 85 patients, 47 (55.3%) gave a history of alcohol intake, HBsAg was positive in 23 (27.1%) and anti-HCV in 3 (3.5%). Decompensation was defined by ascites among 81 (95.3%) patients, variceal bleeding in 31 (36.5%), encephalopathy in 20 (23.5%).Conclusion
Cirrhosis is common in Mulago hospital presenting mainly with ascites and variceal bleeding. Aside from controlling causes of liver diseases, especially alcohol and hepatitis B virus infection, in the interim it is necessary to manage complications in patients who already have cirrhosis. 相似文献77.
78.
79.
80.
C.O. Oliver V.C. Marente C.B. Bellido J.M.Á. Martínez L.M.M. Gómez G.S. Artacho J.S.D. Canedo L.B. Pulido F.J.P. Ruiz M.A.G. Bravo 《Transplantation proceedings》2013,45(10):3566-3568
Liver transplantation for the treatment of patients with advanced liver disease is organized according to a waiting list taking into account different criteria. The agreed distribution model in Andalusia assumes that sometimes an organ is extracted in a different province to that where the implantation is to be performed (shipping), which, therefore, increases the graft ischemic time. The aim of the present study was to determine whether transportation of the organ and being harvested by a team other than the implantation team have a negative effect on final patient survival. 相似文献