全文获取类型
收费全文 | 34057篇 |
免费 | 1307篇 |
国内免费 | 174篇 |
专业分类
耳鼻咽喉 | 596篇 |
儿科学 | 195篇 |
妇产科学 | 92篇 |
基础医学 | 1431篇 |
口腔科学 | 24194篇 |
临床医学 | 1014篇 |
内科学 | 598篇 |
皮肤病学 | 178篇 |
神经病学 | 359篇 |
特种医学 | 578篇 |
外国民族医学 | 6篇 |
外科学 | 3218篇 |
综合类 | 763篇 |
现状与发展 | 1篇 |
一般理论 | 5篇 |
预防医学 | 192篇 |
眼科学 | 98篇 |
药学 | 336篇 |
5篇 | |
中国医学 | 17篇 |
肿瘤学 | 1662篇 |
出版年
2024年 | 5篇 |
2023年 | 895篇 |
2022年 | 1544篇 |
2021年 | 1832篇 |
2020年 | 1919篇 |
2019年 | 1322篇 |
2018年 | 1398篇 |
2017年 | 947篇 |
2016年 | 989篇 |
2015年 | 980篇 |
2014年 | 2303篇 |
2013年 | 1860篇 |
2012年 | 2085篇 |
2011年 | 2037篇 |
2010年 | 2035篇 |
2009年 | 1797篇 |
2008年 | 1236篇 |
2007年 | 1328篇 |
2006年 | 1115篇 |
2005年 | 958篇 |
2004年 | 893篇 |
2003年 | 797篇 |
2002年 | 764篇 |
2001年 | 706篇 |
2000年 | 584篇 |
1999年 | 602篇 |
1998年 | 295篇 |
1997年 | 213篇 |
1996年 | 221篇 |
1995年 | 101篇 |
1994年 | 87篇 |
1993年 | 79篇 |
1992年 | 318篇 |
1991年 | 323篇 |
1990年 | 297篇 |
1989年 | 233篇 |
1988年 | 186篇 |
1987年 | 77篇 |
1986年 | 15篇 |
1985年 | 51篇 |
1984年 | 33篇 |
1983年 | 19篇 |
1982年 | 38篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1976年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 922 毫秒
1.
《International journal of oral and maxillofacial surgery》2022,51(3):332-337
The purpose of this study was to investigate the association between habitual snoring (HS), middle ear disease (MED), and speech problems in children with cleft palate. This cross-sectional study included children aged 2.0–7.9 years with non-syndromic cleft palate anomalies. Parents completed the Pediatric Sleep Questionnaire and a questionnaire about MED. Audiograms and speech assessment were also conducted. Ninety-five children were enrolled; 15.2% of families reported HS, 97.6% MED, and 17.1% speech problems. HS (37.5% vs 10.3%, P = 0.007) and early episodes of MED (92.3% vs 58.2%, P = 0.021) were more likely to be reported for children with isolated cleft palate when compared to those with cleft lip and palate. Children with cleft lip and palate had a higher frequency of MED with effusion compared to those with Robin sequence (86.4% vs 57.1%, P = 0.049). The odds ratio for HS in children with ≥1 episode of MED in the last year was 7.37 (95% confidence interval 1.55–35.15, P = 0.012). There was a trend for children with speech problems reported by parents to have HS (30.8% vs 11.5%, P= 0.076). Anatomical factors play a role in the frequency of upper airway symptoms in children with cleft palate. A recent history of at least one episode of MED was associated with an increased frequency of HS. 相似文献
2.
3.
4.
5.
《Journal of cranio-maxillo-facial surgery》2022,50(3):225-229
The aim of this study was to investigate the clinical course of masticatory function recovery following arthrocentesis. Patients with a unilateral condylar head fracture who underwent arthrocentesis for therapeutic reasons were evaluated and compared with patients with a unilateral condylar head fracture who did not undergo arthrocentesis. At 3 months after treatment, the occlusal contact area and maximum bite force in patients with a fracture treated with arthrocentesis were greater than in those who did not receive arthrocentesis at the same time points, although the differences were not significant. Moreover, at 1 and 3 months following arthrocentesis, mean (±SD) occlusal contact area (1 month: 1.99 ± 0.55 mm2, p = 0.01; 3 months: 2.90 ± 1.36 mm2, p = 0.03) and maximum bite force (1 month: 82.45 ± 15.04 N, p = 0.01; 3 months: 101.11 ± 14.53 N, p = 0.01) on the fractured side in patients who underwent that treatment were significantly reduced when compared with those on the non-fractured side. The authors conclude that if the priority is to avoid open reduction and internal fixation, then the arthrocentesis approach might be a less invasive alternative, albeit with the price of a prolonged healing interval. 相似文献
6.
7.
8.
9.
10.
《The British journal of oral & maxillofacial surgery》2022,60(7):890-895
Patients undergoing sentinel node biopsy (SLNB) for early oral squamous cell carcinoma (OSCC) who harbour occult metastases (pN+ve) may be at greater risk of mortality due to prolonged overall treatment times than those identified as pN+ve on elective neck dissection (ELND). A retrospective comparative survival analysis was therefore undertaken to test this hypothesis. Patients were identified from the South Glasgow multidisciplinary team (MDT) database. Group 1 comprised 38 patients identified as pN+ve, or who were false negative, on sentinel lymph node biopsy (SLNB). Group 2 comprised 146 patients staged pN+ve on ELND. The groups were compared with the Kaplan Meier method and Cox proportional hazards model. In addition, a matched-pair analysis was performed. A unique and specifically designed algorithm was deployed to optimise the pairings. No difference in disease-specific or overall survival was found between the groups. Patients undergoing SLNB as the initial neck staging modality in early OSCC and are identified as pN+ve do not appear to be at a survival disadvantage compared with those staged with ELND. 相似文献