全文获取类型
收费全文 | 174338篇 |
免费 | 10665篇 |
国内免费 | 426篇 |
专业分类
耳鼻咽喉 | 2239篇 |
儿科学 | 5677篇 |
妇产科学 | 3661篇 |
基础医学 | 23705篇 |
口腔科学 | 7569篇 |
临床医学 | 12968篇 |
内科学 | 39100篇 |
皮肤病学 | 4360篇 |
神经病学 | 14665篇 |
特种医学 | 5408篇 |
外国民族医学 | 26篇 |
外科学 | 21622篇 |
综合类 | 1467篇 |
现状与发展 | 1篇 |
一般理论 | 61篇 |
预防医学 | 18237篇 |
眼科学 | 3511篇 |
药学 | 10575篇 |
中国医学 | 689篇 |
肿瘤学 | 9888篇 |
出版年
2023年 | 899篇 |
2022年 | 1965篇 |
2021年 | 3660篇 |
2020年 | 2449篇 |
2019年 | 3480篇 |
2018年 | 4876篇 |
2017年 | 3657篇 |
2016年 | 3402篇 |
2015年 | 3997篇 |
2014年 | 5485篇 |
2013年 | 6970篇 |
2012年 | 10850篇 |
2011年 | 11351篇 |
2010年 | 5726篇 |
2009年 | 5165篇 |
2008年 | 8807篇 |
2007年 | 9451篇 |
2006年 | 8789篇 |
2005年 | 9078篇 |
2004年 | 8555篇 |
2003年 | 7847篇 |
2002年 | 5857篇 |
2001年 | 5067篇 |
2000年 | 5060篇 |
1999年 | 4450篇 |
1998年 | 1614篇 |
1997年 | 1327篇 |
1996年 | 1309篇 |
1995年 | 1134篇 |
1994年 | 1116篇 |
1993年 | 1017篇 |
1992年 | 2732篇 |
1991年 | 2638篇 |
1990年 | 2390篇 |
1989年 | 2400篇 |
1988年 | 2181篇 |
1987年 | 2033篇 |
1986年 | 1884篇 |
1985年 | 1822篇 |
1984年 | 1290篇 |
1983年 | 1052篇 |
1982年 | 595篇 |
1981年 | 542篇 |
1980年 | 522篇 |
1979年 | 963篇 |
1978年 | 654篇 |
1977年 | 516篇 |
1975年 | 582篇 |
1974年 | 579篇 |
1973年 | 578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.
Selwyn Arlington Headley Nayara Emily Viana Mariana de Mello Zanim Michelazzo Ana Aparecida Correa Xavier Cícero Júlio Silva Costa Felipe Hideki Ogo de Pinho Marcelo Diniz dos Santos 《Transboundary and Emerging Diseases》2020,67(Z2):49-59
Neorickettsia helminthoeca (NH), the agent of salmon poisoning disease or canine neorickettiosis (CN), is a bacterial endosymbiont of the nematode Nanophyetus salmincola, and infections are spreading among specific fish‐eating mammalians. This article describes the pathologic and immunohistochemical findings associated with spontaneous NH‐induced infections in dogs from Southern Brazil. The principal pathologic findings were hypertrophy of Peyer patches and lymphadenopathy with lymphocytic proliferation, chronic interstitial pneumonia, and chronic enteritis associated with positive intralesional immunoreactivity to antigens of NH within macrophages and histiocytes. Positive immunoreactivity against canine parvovirus‐2 (CPV‐2) or/and canine distemper virus was not detected in the evaluated intestinal segments or in the samples from the cerebellum and lungs, respectively, from the dogs evaluated. These findings demonstrated that NH was involved in the enteric, pulmonary, and lymphoid lesions herein described, and provide additional information to confirm the occurrence of this bacterial endosymbiont within this geographical location. It is proposed that chronic pneumonia should be considered as a pathologic manifestation of NH‐induced infections. Additionally, our results show that the occurrences of CN seem to be underdiagnosed in Southern Brazil due to the confusion with the incidence of CPV‐2. 相似文献
6.
7.
8.
Lara Silveira Abdo Aguiar Rita de Cssia Rossini Lismary Aparecida de Forville Mesquita Gerson Dellatorre 《Journal of Cosmetic Dermatology》2019,18(6):1733-1736
Depigmented lesions may occur as postinflammatory sequelae of subacute cutaneous lupus erythematosus (SCLE), leading to great psychosocial impact. A 53‐year‐old male patient presented with post‐SCLE depigmented facial lesions after five years of disease stability. We proposed surgical treatment with melanocyte‐keratinocyte transplantation procedure (MKTP), and after five months the patient achieved 90% repigmentation, without Koebner phenomenon (KP). In theory, KP is a possible complication of MKTP procedure since the preparation of the receptor area involves the use of dermabrasion. In an attempt to avoid it, we suggest to maintain the treatment of the underlying disease and wait for a minimum period of disease stability before the procedure. 相似文献
9.
10.