全文获取类型
收费全文 | 25594篇 |
免费 | 615篇 |
国内免费 | 469篇 |
专业分类
耳鼻咽喉 | 802篇 |
儿科学 | 361篇 |
妇产科学 | 350篇 |
基础医学 | 541篇 |
口腔科学 | 1054篇 |
临床医学 | 1198篇 |
内科学 | 2265篇 |
皮肤病学 | 136篇 |
神经病学 | 806篇 |
特种医学 | 416篇 |
外科学 | 12326篇 |
综合类 | 2341篇 |
一般理论 | 1篇 |
预防医学 | 681篇 |
眼科学 | 542篇 |
药学 | 860篇 |
9篇 | |
中国医学 | 256篇 |
肿瘤学 | 1733篇 |
出版年
2023年 | 272篇 |
2022年 | 546篇 |
2021年 | 897篇 |
2020年 | 566篇 |
2019年 | 2334篇 |
2018年 | 2101篇 |
2017年 | 1223篇 |
2016年 | 407篇 |
2015年 | 523篇 |
2014年 | 1159篇 |
2013年 | 997篇 |
2012年 | 974篇 |
2011年 | 1075篇 |
2010年 | 891篇 |
2009年 | 853篇 |
2008年 | 830篇 |
2007年 | 802篇 |
2006年 | 639篇 |
2005年 | 547篇 |
2004年 | 476篇 |
2003年 | 509篇 |
2002年 | 432篇 |
2001年 | 407篇 |
2000年 | 346篇 |
1999年 | 322篇 |
1998年 | 275篇 |
1997年 | 207篇 |
1996年 | 146篇 |
1995年 | 141篇 |
1994年 | 116篇 |
1993年 | 81篇 |
1992年 | 63篇 |
1991年 | 55篇 |
1990年 | 52篇 |
1989年 | 58篇 |
1988年 | 52篇 |
1987年 | 56篇 |
1985年 | 549篇 |
1984年 | 553篇 |
1983年 | 423篇 |
1982年 | 497篇 |
1981年 | 458篇 |
1980年 | 454篇 |
1979年 | 384篇 |
1978年 | 371篇 |
1977年 | 220篇 |
1976年 | 388篇 |
1975年 | 329篇 |
1974年 | 295篇 |
1973年 | 269篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Omar Abdel-Rahman 《Clinical genitourinary cancer》2019,17(2):e329-e338
Background
The objective of the study was to evaluate the outcomes of clinically localized prostate cancer treated with prostatectomy versus radiation therapy within the context of a prospective prostate cancer screening study.Patients and Methods
Within the PLCO (Prostate, Lung, Colorectal, and Ovary) trial, patients who were diagnosed with clinically localized prostate cancer and subsequently received treatment with prostatectomy or radiation therapy (with or without hormonal treatment) were included. Univariate and multivariate Cox regression analyses were then performed to determine factors affecting overall and prostate cancer-specific survival. Factors with P < .05 in univariate analysis were included in the multivariate analysis.Results
A total of 3953 patients were included in the current analysis. These included 2044 patients treated with prostatectomy and 1909 patients treated with radiation therapy with or without hormonal treatment. In an adjusted multivariate analysis for factors affecting overall survival, prostatectomy was associated with better overall survival compared with radiation therapy (hazard ratio, 0.548; 95% confidence interval [CI], 0.440- 681; P < .001). Likewise, in an adjusted multivariate analysis for factors affecting prostate cancer-specific survival, prostatectomy was associated with better prostate cancer-specific survival compared with radiation therapy (hazard ratio, 0.485; 95% CI, 0.286- 0.822; P = .007). Similar findings were found with propensity score matching and repeating the same analyses on the post-matching cohort.Conclusion
Prostatectomy seems to predict better overall and prostate cancer-specific survival compared with radiation therapy among patients with clinically localized prostate cancer diagnosed within the PLCO trial. 相似文献2.
3.
4.
Koel Dutt P N Agarwal Rajdeep Singh Vikas Singh Tomar 《The Indian journal of surgery》2015,77(1):62-64
Haemophilia is a common cause of genetically inherited bleeding disorders. Pseudotumours occur in 1–2 % of persons with severe forms of haemophilia. These are a result of repeated haemorrhage into soft tissues, subperiosteum or a site of bone fracture with inadequate resorption of the extravasated blood. There are a number of therapeutic alternatives for this dangerous condition: surgical removal, percutaneous management, irradiation, embolization etc. In this case report, we describe the natural history, clinical course and successful surgical management of a patient with haemophilia who presented with a massive pseudotumour. We also briefly review the relevant literature on the various therapeutic modalities that have been implemented in the management of this rare complication. Though surgeons may be averse to operate on haemophiliacs, primary surgical management as done in our case may prove to be the definitive treatment option for such patients. 相似文献
5.
6.
7.
8.
9.
《Journal of pediatric surgery》2023,58(6):1213-1218
IntroductionEndoscopic surveillance guidelines for patients with repaired esophageal atresia (EA) rely primarily on expert opinion. Prior to embarking on a prospective EA surveillance registry, we sought to understand EA surveillance practices within the Eastern Pediatric Surgery Network (EPSN).MethodsAn anonymous, 23-question Qualtrics survey was emailed to 181 physicians (surgeons and gastroenterologists) at 19 member institutions. Likert scale questions gauged agreement with international EA surveillance guideline-derived statements. Multiple-choice questions assessed individual and institutional practices.ResultsThe response rate was 77%. Most respondents (80%) strongly agree or agree that EA surveillance endoscopy should follow a set schedule, while only 36% claimed to perform routine upper GI endoscopy regardless of symptoms. Many institutions (77%) have an aerodigestive clinic, even if some lack a multi-disciplinary EA team. Most physicians (72%) expressed strong interest in helping develop evidence-based guidelines.ConclusionsOur survey reveals physician agreement with current guidelines but weak adherence. Surveillance methods vary greatly, underscoring the lack of evidence-based data to guide EA care. Aerodigestive clinics may help implement surveillance schedules. Respondents support evidence-based protocols, which bodes well for care standardization. Results will inform the first multi-institutional EA databases in the United States (US), which will be essential for evidence-based care.Level of EvidenceThis is a prognosis study with level 4 evidence. 相似文献
10.
Jae Hwang Song Chan Kang Deuk Soo Hwang Dong Hun Kang Yong Hwan Kim 《Foot and Ankle Surgery》2019,25(6):748-754
BackgroundThe purpose of this study was to investigate and compare the clinical outcomes of dorsal suspension with those of neurectomy for the treatment of Morton’s neuroma.MethodsWe conducted a retrospective study of dorsal suspension and neurectomy group. The dorsal suspension was performed by dorsal transposition of neuroma over the dorsal transverse ligament after neurolysis. The visual analog scale (VAS), the Foot and Ankle Ability Measure (FAAM), postoperative satisfaction, and complications were evaluated.ResultsBoth groups reported significant pain relief, and there were no significant differences between the groups with respect to postoperative pain. The postoperative FAAM outcomes showed no significant between-group differences. Satisfaction analysis showed ‘excellent’ and ‘good’ results in the dorsal suspension and neurectomy groups (95% and 77.7%, respectively). Complications of numbness and paresthesia reported in the dorsal suspension group (5% and 5%, respectively) were significantly fewer than those of neurectomy group (61.1% and 33.3%, respectively) (both, p < .05).ConclusionsWith its favorable results, dorsal suspension can be another operative option for the treatment of Morton’s neuroma.Level of Evidence: Level III, retrospective comparative case series. 相似文献