全文获取类型
收费全文 | 71475篇 |
免费 | 4416篇 |
国内免费 | 268篇 |
专业分类
耳鼻咽喉 | 1112篇 |
儿科学 | 2027篇 |
妇产科学 | 1328篇 |
基础医学 | 7944篇 |
口腔科学 | 1454篇 |
临床医学 | 7043篇 |
内科学 | 14827篇 |
皮肤病学 | 1113篇 |
神经病学 | 6918篇 |
特种医学 | 2492篇 |
外国民族医学 | 5篇 |
外科学 | 12393篇 |
综合类 | 852篇 |
一般理论 | 94篇 |
预防医学 | 5954篇 |
眼科学 | 1381篇 |
药学 | 4563篇 |
中国医学 | 111篇 |
肿瘤学 | 4548篇 |
出版年
2023年 | 393篇 |
2022年 | 647篇 |
2021年 | 1770篇 |
2020年 | 928篇 |
2019年 | 1550篇 |
2018年 | 1812篇 |
2017年 | 1307篇 |
2016年 | 1338篇 |
2015年 | 1476篇 |
2014年 | 2276篇 |
2013年 | 3210篇 |
2012年 | 4854篇 |
2011年 | 5035篇 |
2010年 | 2760篇 |
2009年 | 2450篇 |
2008年 | 4457篇 |
2007年 | 4712篇 |
2006年 | 4572篇 |
2005年 | 4546篇 |
2004年 | 4288篇 |
2003年 | 3952篇 |
2002年 | 3668篇 |
2001年 | 559篇 |
2000年 | 488篇 |
1999年 | 637篇 |
1998年 | 745篇 |
1997年 | 670篇 |
1996年 | 592篇 |
1995年 | 524篇 |
1994年 | 511篇 |
1993年 | 430篇 |
1992年 | 386篇 |
1991年 | 380篇 |
1990年 | 313篇 |
1989年 | 292篇 |
1988年 | 291篇 |
1987年 | 271篇 |
1986年 | 282篇 |
1985年 | 371篇 |
1984年 | 445篇 |
1983年 | 374篇 |
1982年 | 539篇 |
1981年 | 497篇 |
1980年 | 457篇 |
1979年 | 213篇 |
1978年 | 281篇 |
1977年 | 268篇 |
1976年 | 212篇 |
1975年 | 227篇 |
1973年 | 188篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Boffa Joseph W. Tock Jamie L. Morabito Danielle M. Schmidt Norman B. 《Cognitive therapy and research》2022,46(5):1016-1029
Cognitive Therapy and Research - Despite interest in psychological inflexibility as a marker of suicide risk, no measure of psychological inflexibility specific to SI exists. The present study... 相似文献
2.
3.
Raymond J. Chan RN PhD Vivienne E. Milch MBBS MHPol Fiona Crawford-Williams PhD Oluwaseyifunmi Andi Agbejule BRadTherapy Ria Joseph MNutrDiet Jolyn Johal BND Narayanee Dick BSc Matthew P. Wallen PhD Julie Ratcliffe PhD Anupriya Agarwal MBBS Larissa Nekhlyudov MD Matthew Tieu PhD Manaf Al-Momani BPharm Scott Turnbull PhD Rahul Sathiaraj MPH Dorothy Keefe MBBS MD Nicolas H. Hart PhD 《CA: a cancer journal for clinicians》2023,73(6):565-589
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs. 相似文献
4.
5.
6.
7.
8.
9.
Naveen B.S. M.T. Mohan J. Tharayil S.T. Joseph 《International journal of oral and maxillofacial surgery》2021,50(8):1003-1008
A local pedicled vascularized bone flap can prevent the morbidity and cost of free bone flap surgery in small segmental bone defects or long cartilaginous defects of the head and neck. Such flaps can also be useful in patients who are high risk for surgery. The periosteal vascularity of the mandible can be used to design islanded facial artery-based bone flaps, which can be utilized to that extent. Two patients with a small segmental mandibulectomy defect and one patient with a long cricotracheal resection defect underwent reconstruction using three different designs of islanded facial artery osteomyomucosal/osseous flap (iFOMM). The patients had a minimum follow-up period of 18 months. All flaps were successful, with satisfactory healing and without any functional deficit or disease at last follow-up. 相似文献
10.
Rian M. Hasson Kayla A. Fay Joseph D. Phillips Timothy M. Millington David J. Finley 《American journal of surgery》2021,221(4):725-730
BackgroundRural populations face many health disadvantages compared to urban areas. There is a critical need to better understand the current lung cancer screening landscape in these communities to identify targeted areas to improve the impact of this proven tool.MethodsData from the County Health Rankings of New Hampshire and Vermont was reviewed for population density, distribution of adult smokers, and level of education compared to the distribution of Lung Cancer Screening Facilities throughout these two states.ResultsScreening programs in southern counties of Vermont with lower levels of education have decreased access. In New Hampshire, there are no programs within 30 miles of the areas with the largest distribution of smokers, and decreased access in some areas with the lowest levels of education.ConclusionsImproving equitable access to high-quality screening services in rural regions and the creation of targeted interventions to address decreased access in areas of high tobacco use and low education is vital to decreasing the incidence of latestage presentations of lung cancer within these populations. 相似文献