全文获取类型
收费全文 | 1916篇 |
免费 | 110篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 33篇 |
妇产科学 | 52篇 |
基础医学 | 286篇 |
口腔科学 | 11篇 |
临床医学 | 205篇 |
内科学 | 423篇 |
皮肤病学 | 52篇 |
神经病学 | 237篇 |
特种医学 | 50篇 |
外科学 | 175篇 |
综合类 | 6篇 |
预防医学 | 128篇 |
眼科学 | 20篇 |
药学 | 160篇 |
中国医学 | 5篇 |
肿瘤学 | 192篇 |
出版年
2024年 | 3篇 |
2023年 | 16篇 |
2022年 | 51篇 |
2021年 | 57篇 |
2020年 | 27篇 |
2019年 | 34篇 |
2018年 | 57篇 |
2017年 | 46篇 |
2016年 | 52篇 |
2015年 | 63篇 |
2014年 | 75篇 |
2013年 | 100篇 |
2012年 | 160篇 |
2011年 | 158篇 |
2010年 | 81篇 |
2009年 | 80篇 |
2008年 | 143篇 |
2007年 | 138篇 |
2006年 | 126篇 |
2005年 | 109篇 |
2004年 | 120篇 |
2003年 | 102篇 |
2002年 | 81篇 |
2001年 | 15篇 |
2000年 | 10篇 |
1999年 | 14篇 |
1998年 | 10篇 |
1997年 | 11篇 |
1996年 | 11篇 |
1995年 | 9篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 6篇 |
1991年 | 2篇 |
1990年 | 5篇 |
1989年 | 4篇 |
1988年 | 4篇 |
1986年 | 4篇 |
1985年 | 6篇 |
1984年 | 6篇 |
1983年 | 5篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1968年 | 1篇 |
1961年 | 1篇 |
1945年 | 9篇 |
1943年 | 4篇 |
排序方式: 共有2043条查询结果,搜索用时 31 毫秒
41.
42.
43.
44.
Aikaterini Nanou Chrisavgi Toumpeki Pavlos Fanis Nicoletta Bianchi Lucia Carmela Cosenza Cristina Zuccato George Sentis Giorgos Giagkas Coralea Stephanou Marios Phylactides Soteroula Christou Michalis Hadjigavriel Maria Sitarou Carsten W. Lederer Roberto Gambari Marina Kleanthous Eleni Katsantoni 《Haematologica》2021,106(4):1207
45.
Conti Giovanni Galletta Francesca Carucci Nicolina Stefania La Mazza Antonella Mollica Salvatore Antonio Alibrandi Angela Visalli Carmela 《Clinical rheumatology》2021,40(9):3723-3727
Clinical Rheumatology - The aim of this study is to evaluate a possible negative action of lockdown, during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, in the... 相似文献
46.
Liver Involvement in Obese Children (Ultrasonography and Liver Enzyme Levels at Diagnosis and During Follow-up in an Italian Population) 总被引:26,自引:0,他引:26
Maria Carmela Saviano Francesco Brunetti Armido Rubino Adriana Franzese Pietro Vajro Alessandro Argenziano Alessandro Puzziello Maria Pina Iannucci 《Digestive diseases and sciences》1997,42(7):1428-1432
Our aim was to evaluate incidence and riskfactors of liver involvement in obese Italian childrenas assessed by both ultrasonographic and biochemicalparameters. In seventy-five consecutive obese children (age 9.5 ± 2.9 years, males/females41/34), serum levels of enzymes and ultrasonography ofthe liver were evaluated. Tests were repeated one,three, and six months after starting a moderatehypocaloric diet and an exercise program. Three obese childrenwho were found to have chronic viral hepatitis wereexcluded from the study. Thirty-eight of 72 (53%) obesechildren had an ultrasonographic image of bright liver consistent with liver steatosis. Thelatter was severe in nine children, moderate in 16, andmild in 13. Eighteen obese children (25%) had elevatedtransaminase levels. Bright liver andhypertransaminasemia were not due to any of the most common causesof liver disease. Both were rapidly responsive to lossof weight, confirming that liver involvement wassecondary to obesity and that steatosis orsteatohepatitis rather than fibrosis were involved. Obesityduration not more than three years (odds ratio = 4.77),a higher degree of obesity (odds ratio = 2.09), andhypertransaminasemia (odds ratio = 2.15) appeared asimportant predictive factors of liver involvement atultrasonography. Incidence of liver involvement assessedby means of ultrasonography is significantly higher thanthat revealed by measurement of serum liver enzymes. A short duration of obesity emerged as apotentially new risk factor of liver involvement in thepediatric obese population and needs to be confirmed infuture studies. 相似文献
47.
p.Leu636Pro mutation is associated with cystic fibrosis transmembrane conductance regulator‐related disorders (congenital bilateral absence of vas deferens)
下载免费PDF全文
![点击此处可从《International journal of urology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
48.
49.
Stefano?ScaringiEmail authorView authors OrcID profile Annamaria?Di?Bella Luca?Boni Francesco?Giudici Carmela?Di?Martino Daniela?Zambonin Ferdinando?Ficari 《International journal of colorectal disease》2018,33(4):479-485
Background and aims
Surgical management of Crohn’s colitis represents one of the most complex situations in colorectal surgery. Segmental colectomy (SC) and total abdominal colectomy with ileorectal anastomosis (TAC-IRA) are the most common procedures, but there are few available data on their long-term outcome. The aim of the present study was to analyze the long-term outcome of patients who underwent segmental colectomy for Crohn’s colitis, with regard to the risk for total abdominal colectomy.Methods
In this observational, monocentric, retrospective analysis, we analyzed patients who received a segmental colectomy for Crohn’s colitis at our institution. The database was updated by asking patients to complete a questionnaire by telephone or at the outpatient clinic. Only patients followed up at our Hospital were included. Patients were followed up by a specialized multidisciplinary team (IBD Unit). The primary endpoint was the interval between segmental colectomy and, when performed, total abdominal colectomy.Results
Between 1973 and 2014, 200 patients underwent segmental colectomy for Crohn’s colitis. The median follow-up was 13.5 years (interquartile range [IQR] 7.8–21.5). Overall, 62 patients (31%) had a surgical recurrence, of these, 42 (21%) received total abdominal colectomy. At multivariate analysis, the presence of ≥?3 sites (HR =?2.47; 95% CI 1.22–5.00; p?=?0.018) and perianal disease (HR =?3.23; 95% CI 1.29–8.07; p?=?0.006) proved to be risk factors for total abdominal colectomy.Conclusions
The risk for surgical recurrence after SC for Crohn’s colitis is acceptable. We recommend a bowel-sparing policy for the treatment of Crohn’s colitis in any case in which the extent of the disease at the moment of surgery makes the conservative approach achievable.50.
Max Wagener Gino Lee Fabio Stallone Tanja Marxer Christian Puelacher Carmela Schumacher Seoung Mann Sou Raphael Twerenbold Tobias Reichlin Thomas Hochgruber Yunus Tanglay Michael Freese Damian Wild Katharina Rentsch Stefan Osswald Michael Zellweger Christian Mueller 《European journal of clinical investigation》2015,45(11):1175-1183