全文获取类型
收费全文 | 16443篇 |
免费 | 1994篇 |
国内免费 | 347篇 |
专业分类
耳鼻咽喉 | 80篇 |
儿科学 | 561篇 |
妇产科学 | 420篇 |
基础医学 | 1611篇 |
口腔科学 | 719篇 |
临床医学 | 2304篇 |
内科学 | 2024篇 |
皮肤病学 | 102篇 |
神经病学 | 2551篇 |
特种医学 | 313篇 |
外国民族医学 | 2篇 |
外科学 | 1170篇 |
综合类 | 1960篇 |
现状与发展 | 6篇 |
预防医学 | 2309篇 |
眼科学 | 195篇 |
药学 | 848篇 |
29篇 | |
中国医学 | 399篇 |
肿瘤学 | 1181篇 |
出版年
2024年 | 73篇 |
2023年 | 402篇 |
2022年 | 633篇 |
2021年 | 880篇 |
2020年 | 948篇 |
2019年 | 855篇 |
2018年 | 808篇 |
2017年 | 770篇 |
2016年 | 767篇 |
2015年 | 715篇 |
2014年 | 1105篇 |
2013年 | 1318篇 |
2012年 | 1070篇 |
2011年 | 944篇 |
2010年 | 728篇 |
2009年 | 747篇 |
2008年 | 673篇 |
2007年 | 716篇 |
2006年 | 631篇 |
2005年 | 549篇 |
2004年 | 438篇 |
2003年 | 396篇 |
2002年 | 342篇 |
2001年 | 291篇 |
2000年 | 213篇 |
1999年 | 185篇 |
1998年 | 202篇 |
1997年 | 154篇 |
1996年 | 145篇 |
1995年 | 136篇 |
1994年 | 119篇 |
1993年 | 107篇 |
1992年 | 100篇 |
1991年 | 87篇 |
1990年 | 63篇 |
1989年 | 71篇 |
1988年 | 60篇 |
1987年 | 40篇 |
1986年 | 35篇 |
1985年 | 49篇 |
1984年 | 38篇 |
1983年 | 21篇 |
1982年 | 28篇 |
1981年 | 21篇 |
1980年 | 19篇 |
1979年 | 15篇 |
1978年 | 8篇 |
1977年 | 12篇 |
1976年 | 11篇 |
1968年 | 11篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
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
3.
4.
5.
6.
7.
8.
Ragan McLeod Sunyoung Kim Sara Tomek Sara McDaniel 《Early child development and care》2019,189(8):1284-1291
Young children enter kindergarten with varying levels of readiness and abilities to learn. One factor that contributes to lower levels of school readiness is poverty. One timely, cost-effective, and feasible strategy to boost school readiness, regardless of exposure to high-quality preschool is to leverage the summer months prior to kindergarten entry and provide comprehensive, evidence-based programming immediately before the school year begins. The current study implemented a community-based summer programme targeted at improving school readiness for 25 four- and five-year-old children in a low-income community. Across the 9-week study, children participated in two types of early literacy activities and the Incredible Years social/emotional learning curriculum. Results indicate that participants demonstrated significant growth across three early literacy skills and were rated as overall stable regarding their behaviour across the summer. These results are discussed along with implications and future directions in this line of research. 相似文献
9.
10.
乳腺癌是一类具有异质性的肿瘤,不同患者的治疗方法和疗效都不相同。尽管目前仍在努力为激素受体(hormone receptor,HR)阳性(+)、人表皮生长因子受体2(human epidermal growth factor receptor 2,HER-2)阴性(-)、淋巴结(axillary lymph node,ALN)阴性(-)的早期乳腺癌患者寻找合适的治疗方法,但其术后是否需要化疗仍然是肿瘤科医生面临的一个难题。以往治疗主要依赖于经典的组织病理学和免疫组织化学技术,随着精准医疗时代的到来,我们需要更定量的诊断方法和合理的个体化治疗。虽然化疗可降低疾病复发风险并提高生存率,但它带来的不良反应事件会降低患者的生活质量,尤其低复发风险(recurrence risk,RS)有可能超过化疗益处。21基因检测不仅可以预测这类早期乳腺癌化疗疗效及评估预后,还可提供精准的个体化治疗方案指导用药,为患者增添信心。本文就乳腺癌21基因检测的研究进展进行综述。 相似文献