全文获取类型
收费全文 | 4126篇 |
免费 | 259篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 38篇 |
妇产科学 | 15篇 |
基础医学 | 290篇 |
口腔科学 | 65篇 |
临床医学 | 598篇 |
内科学 | 406篇 |
皮肤病学 | 235篇 |
神经病学 | 60篇 |
特种医学 | 391篇 |
外科学 | 1412篇 |
综合类 | 290篇 |
预防医学 | 162篇 |
眼科学 | 33篇 |
药学 | 187篇 |
4篇 | |
中国医学 | 210篇 |
肿瘤学 | 28篇 |
出版年
2024年 | 8篇 |
2023年 | 133篇 |
2022年 | 232篇 |
2021年 | 243篇 |
2020年 | 218篇 |
2019年 | 174篇 |
2018年 | 131篇 |
2017年 | 150篇 |
2016年 | 173篇 |
2015年 | 133篇 |
2014年 | 311篇 |
2013年 | 317篇 |
2012年 | 220篇 |
2011年 | 283篇 |
2010年 | 183篇 |
2009年 | 175篇 |
2008年 | 156篇 |
2007年 | 148篇 |
2006年 | 107篇 |
2005年 | 87篇 |
2004年 | 89篇 |
2003年 | 82篇 |
2002年 | 54篇 |
2001年 | 63篇 |
2000年 | 66篇 |
1999年 | 47篇 |
1998年 | 45篇 |
1997年 | 36篇 |
1996年 | 35篇 |
1995年 | 33篇 |
1994年 | 26篇 |
1993年 | 15篇 |
1992年 | 22篇 |
1991年 | 20篇 |
1990年 | 26篇 |
1989年 | 21篇 |
1988年 | 13篇 |
1987年 | 20篇 |
1986年 | 17篇 |
1985年 | 12篇 |
1984年 | 12篇 |
1983年 | 12篇 |
1982年 | 11篇 |
1981年 | 9篇 |
1980年 | 11篇 |
1979年 | 12篇 |
1978年 | 8篇 |
1977年 | 7篇 |
1976年 | 7篇 |
1975年 | 4篇 |
排序方式: 共有4426条查询结果,搜索用时 578 毫秒
1.
《The Foot》2021
The effect of tobacco smoking on foot and ankle procedures is likely to be more pronounced when compared to other orthopaedic surgery. This is due to the peripheral nature of the vasculature involved. This paper reviews the current clinical evidence on the effects of smoking foot and ankle surgery. In the trauma setting, the evidence suggests that wound complications and non-unions are significantly higher in the smoking population. In the elective setting there is a significantly increased risk of non-union in ankle and hindfoot arthrodeses in smokers. In the setting of diabetes, ulceration rate in smokers is higher and there may be a higher risk of amputation. 相似文献
2.
3.
4.
5.
6.
Factors predicting the development of pressure ulcers in an at‐risk population who receive standardized preventive care: secondary analyses of a multicentre randomised controlled trial 下载免费PDF全文
7.
8.
《International journal of oral and maxillofacial surgery》2020,49(12):1599-1604
Helicobacter pylori is an established cause of gastric ulcers. Its role in causing recurrent aphthous stomatitis (RAS) remains controversial. Fifty-two RAS patients and 52 sex-matched controls were recruited in this case–control study. All subjects were screened for hematinic deficiencies and H. pylori. The latter was assessed quantitatively using the 14C-urea breath test. The χ2 test and Wilcoxon signed ranks test were used to compare H. pylori and hematinic indices between cases and controls, while conditional logistic regression was used to assess the associations between the occurrence of RAS and independent factors. H. pylori was positive in 56.7% of the overall sample, with no difference between RAS patients (50.8%) and controls (49.2%) (P = 0.843). The median H. pylori and haematological indices values did not show any association with ulcer diameter, number, or frequency. Interestingly, gastric hyperacidity was significantly associated with RAS, and this association was independent from tobacco smoking, alcohol drinking, and H. pylori (odds ratio 14.99, 95% confidence interval 2.47–90.95; P = 0.003). This study found no association between H. pylori and RAS. The association between RAS and gastric hyperacidity suggests that gastric refluxate, not H. pylori, has an effect on the oral mucosa that favours an ulcerative change. 相似文献
9.
10.
Alper Kurtoglu Alauddin Kochai Mustafa Erkan Inanmaz Erhan Sukur Dogan Keskin Mehmet Türker Mustafa Uysal Zafer Sen Ismail Daldal 《Medicine》2021,100(13)
Different methods have been used throughout the years for syndesmotic injury but there is no consensus on the ideal treatment. Some methods are expensive and some have more complications. The aim of this study is to compare single suture endobutton with double suture endobutton and screw fixation for syndesmotic injury.Sixty nine patients with syndesmotic injury with fibular fractures whom were treated with a single interosseous suture endobutton system (ZipTightTM, Zimmer Biomet), a double interosseous suture endobutton system (ZipTightTM, Zimmer Biomet) and 1 syndesmotic screw (TST, Istanbul, Turkey) were included in this study. Functional and radiological results from patient records between 2015 and 2018 were retrospectively evaluated.Twenty patients were treated with the double interosseous suture endobutton, 23 were treated with the single interosseous suture endobutton, and 26 were treated with traditional AO screw fixation. Three patients from the screw fixation group (11.5%) required revision surgery (P < .05). All the radiologic and clinical outcomes were statistical similar in all 3 groups.Our findings showed that the interosseous suture endobutton system is at least as safe as the screw fixation technique for treatment of syndesmosis joint injuries and can be used as an alternative to the screw method. The interosseous suture endobutton system eliminates the need for a second surgery to remove the hardware, which minimizes the probability of re-diastasis. Since our results showed no statistical difference between single and double interosseous suture endobutton systems, the less costly single endobutton system may be the better alternative. 相似文献