全文获取类型
收费全文 | 333513篇 |
免费 | 29662篇 |
国内免费 | 7868篇 |
专业分类
耳鼻咽喉 | 4154篇 |
儿科学 | 6316篇 |
妇产科学 | 5298篇 |
基础医学 | 23930篇 |
口腔科学 | 10079篇 |
临床医学 | 34342篇 |
内科学 | 38628篇 |
皮肤病学 | 4663篇 |
神经病学 | 16623篇 |
特种医学 | 9634篇 |
外国民族医学 | 49篇 |
外科学 | 32526篇 |
综合类 | 51664篇 |
现状与发展 | 32篇 |
一般理论 | 26篇 |
预防医学 | 33994篇 |
眼科学 | 4050篇 |
药学 | 30344篇 |
465篇 | |
中国医学 | 37670篇 |
肿瘤学 | 26556篇 |
出版年
2024年 | 4898篇 |
2023年 | 7795篇 |
2022年 | 12407篇 |
2021年 | 16177篇 |
2020年 | 15712篇 |
2019年 | 16213篇 |
2018年 | 14387篇 |
2017年 | 13339篇 |
2016年 | 12636篇 |
2015年 | 11923篇 |
2014年 | 22506篇 |
2013年 | 25221篇 |
2012年 | 19538篇 |
2011年 | 20761篇 |
2010年 | 16916篇 |
2009年 | 15066篇 |
2008年 | 14219篇 |
2007年 | 14663篇 |
2006年 | 12735篇 |
2005年 | 11010篇 |
2004年 | 9056篇 |
2003年 | 8103篇 |
2002年 | 6427篇 |
2001年 | 5493篇 |
2000年 | 4726篇 |
1999年 | 3779篇 |
1998年 | 3090篇 |
1997年 | 2704篇 |
1996年 | 2215篇 |
1995年 | 2061篇 |
1994年 | 1763篇 |
1993年 | 1475篇 |
1992年 | 1340篇 |
1991年 | 1219篇 |
1990年 | 1062篇 |
1989年 | 1000篇 |
1988年 | 936篇 |
1987年 | 828篇 |
1986年 | 731篇 |
1985年 | 2020篇 |
1984年 | 2264篇 |
1983年 | 1436篇 |
1982年 | 1859篇 |
1981年 | 1335篇 |
1980年 | 1134篇 |
1979年 | 1012篇 |
1978年 | 799篇 |
1977年 | 593篇 |
1976年 | 740篇 |
1975年 | 509篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
D. Adkins J. Ley P. Oppelt H.A. Gay M. Daly R.C. Paniello R. Jackson P. Pipkorn J. Rich J. Zevallos K. Trinkaus W. Thorstad 《Clinical oncology (Royal College of Radiologists (Great Britain))》2019,31(9):e123-e131
AimsOrgan preservation, an important goal in the treatment of head and neck squamous cell carcinoma (HNSCC), may include induction chemotherapy and cisplatin with radiation therapy (CRT). To our knowledge, no reports have directly compared the impact of induction chemotherapy with that of CRT on health-related quality of life (HRQOL).Materials and methodsIn a phase II trial, we assessed the HRQOL of patients treated with induction chemotherapy followed by CRT. Eligible patients had stage III–IV HNSCC. HRQOL questionnaires were administered at baseline, the end of induction (EOI), the end of CRT (EOCRT) and after CRT. Functional Assessment of Cancer Therapy (FACT version 4) assessed HRQOL. We carried out a comparison of changes in HRQOL from baseline to EOI and from EOI to EOCRT. This trial is registered with ClinicalTrials.gov (NCT01566435).ResultsThirty patients were enrolled in the study. Most HRQOL questionnaires were completed (88%). The mean total FACT scores did not differ from baseline to EOI (general: 83.8 versus 79.1, P = 0.08; head and neck: 109.7 versus 105.8, P = 0.33; Total Outcome Index: 69.7 versus 62.3, P = 0.03; respectively, using P ≤ 0.01 to adjust for multiple simultaneous tests of differences). However, total FACT scores significantly worsened from EOI to EOCRT (79.1 versus 62.3, P = 0.01; 105.8 versus 74.2, P < 0.01; 62.3 versus 34.2, P = 0.01; respectively). Within domains, the head and neck cancer subscale score did not differ from baseline to EOI (median 28.5 versus 27.0, P = 0.69), but significantly worsened from EOI to EOCRT (27.0 versus 9.5, P < 0.01). Swallowing, oral pain and voice quality improved from baseline to EOI, but worsened from EOI to EOCRT. Physical and functional scores worsened from baseline to EOI and from EOI to EOCRT. The emotional well-being score improved from baseline to EOI but worsened from EOI to EOCRT.ConclusionsOverall, HRQOL did not significantly change from baseline to EOI but dramatically worsened from EOI to EOCRT. 相似文献
63.
Alireza Aminsharifi Lauren E. Howard Christopher L. Amling William J. Aronson Matthew R. Cooperberg Christopher J. Kane Martha K. Terris Thomas J. Polascik Stephen J. Freedland 《Clinical genitourinary cancer》2019,17(1):e140-e149
Purpose
To investigate the preoperative use of combination metformin and statin versus monotherapy on biochemical recurrence (BCR) after radical prostatectomy (RP) in diabetic men.Patients and Methods
Data of 843 diabetic men who underwent RP were stratified on the basis of preoperative use of no drug or of metformin, statin, or both. Multivariable Cox models were used to test the association between treatment and BCR. In a secondary analysis, models were stratified by race and body mass index (BMI) and further adjusted for glycated hemoglobin (HbA1c).Results
A total of 259 men (31%) received statin therapy, 94 (11%) metformin, 307 (36%) metformin + statin, and 183 (22%) neither. Five-year BCR-free survival rates were 75% in metformin only versus 75% in metformin + statin versus 60% in statin versus 68% in no drug groups (log-rank, P = .003). On multivariable analysis, preoperative statin use was associated with increased BCR risk versus men receiving neither drug (hazard ratio [HR] = 1.84; 95% confidence interval [CI], 1.28-2.64). Metformin alone (HR 0.88; 95% CI, 0.53-1.47) and metformin + statin (HR 0.88; 95% CI, 0.58-1.33) were unrelated to BCR risks. In secondary analysis, the association between statin use and higher BCR risk was similar regardless of race, but was stronger among men with BMI ≥ 30 kg/m2 (HR 3.12; 95% CI, 1.70-5.72). These results were largely unchanged after adjusting for HbA1c.Conclusion
Among diabetic men undergoing RP, preoperative statin use was associated with worse BCR risk, especially among men with a high BMI, but these associations may be mitigated by concomitant use of metformin. If validated in future findings, research is needed to understand the basis for these associations. 相似文献64.
基于五运六气理论,尤其是三年化疫理论,对当前正在流行的新型冠状病毒感染的肺炎进行病因病机分析及分期诊疗指导。 相似文献
65.
Dawn Sinclair Eileen Savage Maria O’ Brien Anthony O’Reilly Carmel Mullaney Marie Killeen 《Journal of interprofessional care》2020,34(4):561-565
ABSTRACT This report describes the development of the first national undergraduate interprofessional standardized curriculum in chronic disease prevention for healthcare professionals in the Republic of Ireland. This project brought together for the first time all higher education institutions nationwide in a novel collaboration with the national health service i.e. the Health Service Executive (HSE), to develop a standardized national curriculum for undergraduate health care professions. The curriculum sits within the framework of Making Every Contact Count, the goal of which is to re-orientate health services to embed the ethos of prevention through lifestyle behavior change as part of the routine care of health professionals. The core focus of Making Every Contact Count is chronic disease prevention, targeting four main lifestyle risk factors for chronic disease; tobacco use, alcohol consumption, physical inactivity and unhealthy eating. Making Every Contact Count is a key component of Healthy Ireland, the Irish national framework for health and wellbeing. The aim of the curriculum is to prepare newly qualified health professionals with the skills needed to support patients to achieve lifestyle behavior change delivered as part of routine clinical care. 相似文献
66.
67.
68.
69.
70.