全文获取类型
收费全文 | 1432698篇 |
免费 | 101288篇 |
国内免费 | 3068篇 |
专业分类
耳鼻咽喉 | 21136篇 |
儿科学 | 44662篇 |
妇产科学 | 41847篇 |
基础医学 | 200822篇 |
口腔科学 | 42284篇 |
临床医学 | 120116篇 |
内科学 | 280868篇 |
皮肤病学 | 32962篇 |
神经病学 | 114418篇 |
特种医学 | 57881篇 |
外国民族医学 | 469篇 |
外科学 | 223635篇 |
综合类 | 32549篇 |
现状与发展 | 6篇 |
一般理论 | 466篇 |
预防医学 | 97320篇 |
眼科学 | 34619篇 |
药学 | 106669篇 |
3篇 | |
中国医学 | 3278篇 |
肿瘤学 | 81044篇 |
出版年
2018年 | 12688篇 |
2016年 | 11615篇 |
2015年 | 13051篇 |
2014年 | 18215篇 |
2013年 | 27475篇 |
2012年 | 36136篇 |
2011年 | 38005篇 |
2010年 | 22649篇 |
2009年 | 22050篇 |
2008年 | 36660篇 |
2007年 | 40013篇 |
2006年 | 40670篇 |
2005年 | 39471篇 |
2004年 | 38492篇 |
2003年 | 37245篇 |
2002年 | 36707篇 |
2001年 | 68874篇 |
2000年 | 70445篇 |
1999年 | 59632篇 |
1998年 | 15982篇 |
1997年 | 14696篇 |
1996年 | 14002篇 |
1995年 | 13178篇 |
1994年 | 12322篇 |
1992年 | 45666篇 |
1991年 | 44126篇 |
1990年 | 43377篇 |
1989年 | 42182篇 |
1988年 | 39365篇 |
1987年 | 38741篇 |
1986年 | 37184篇 |
1985年 | 35239篇 |
1984年 | 26435篇 |
1983年 | 22380篇 |
1982年 | 13460篇 |
1981年 | 12333篇 |
1979年 | 25370篇 |
1978年 | 18180篇 |
1977年 | 15751篇 |
1976年 | 14166篇 |
1975年 | 16224篇 |
1974年 | 19054篇 |
1973年 | 18554篇 |
1972年 | 17688篇 |
1971年 | 16565篇 |
1970年 | 15649篇 |
1969年 | 15039篇 |
1968年 | 14109篇 |
1967年 | 12589篇 |
1966年 | 11731篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
161.
B. Davido R. Batista H. Fessi H. Michelon L. Escaut C. Lawrence M. Denis C. Perronne J. Salomon A. Dinh 《Médecine et maladies infectieuses》2019,49(3):214-218
Objective
A rapid and worrying emergence of vancomycin-resistant enterococci (VRE) gut colonization is occurring worldwide and may be responsible for outbreaks, especially in healthcare facilities. While no efficient decolonization strategies are recommended, we assessed fecal microbiota transplantation (FMT) to eradicate VRE colonization.Patients and method
Our main objective was to measure the impact of FMT on decolonization of VRE carriers, confirmed by at least two consecutive negative rectal swabs at one-week interval during a 3-month follow-up period. Patients received no antibiotic prior to the FMT.Results
After a month only three patients remained colonized with VRE. Decolonization was associated with 87.5% (n = 7) of success after three months as only one patient remained colonized.Conclusion
Our first results confirm that the FMT seems to be safe, with an impact on VRE colonization over time that may help control outbreaks. 相似文献162.
163.
164.
165.
166.
167.
168.
Cécile Vicier Lillian Werner Jonathan Chipman Lauren C. Harshman Dattatraya H. Patil Raina N. Fichorova Jennifer R. Rider Martin G. Sanda Lorelei A. Mucci Christopher J. Sweeney 《Clinical genitourinary cancer》2019,17(1):32-37
Background
Inflammation and infections have been associated with prostate cancer progression. We assessed whether elevated serum cytokines or T. vaginalis seropositivity at the time of diagnosis was associated with higher grade or lethal prostate cancer.Patients and Methods
Men with localized or metastatic prostate cancer were included in this study. Cytokine serum levels including interleukin (IL)-1α, IL-1β, IL-2, IL-6, IL-8, monocyte chemotactic protein 1 (CCL-2), tumor necrosis factor α, and growth-regulated oncogene α (CXCL-1) using a multiplex enzyme-linked immunosorbent assay and T. vaginalis serology were measured in blood samples at diagnosis.Results
A total of 324 patients were identified at time of localized disease and 118 at time of metastatic disease. Of the 189 patients with localized disease and clinical follow-up data (median, 73 months), 28 developed lethal disease. There was no association between circulating cytokine levels above median concentrations nor T. vaginalis seropositivity and risk of intermediate- to high-risk or lethal prostate cancer.Conclusion
Higher levels of serum cytokine levels and T. vaginalis seropositivity at diagnosis are not associated with high-grade or lethal prostate cancer and do not aid risk stratification of localized prostate cancer. 相似文献169.
Stephanie A. Grilo Marina Catallozzi John S. Santelli Hanying Yan Xiaoyu Song Jennifer Heitel Kristen Kaseeska Julie Gorzkowski Alexandra E. Dereix Jonathan D. Klein 《The Journal of adolescent health》2019,64(3):311-318
Purpose
The objective of the study was to define factors associated with adolescent and young adult (AYA) experiences with private time and having discussed confidentiality and the impact of these experiences on improving delivery of clinical preventive services.Methods
In 2016, a nationally representative sample of 1,918 US AYAs (13- to 26-year-olds) was surveyed. Survey questionnaire domains were based on prior research and Fishers' information-motivation-behavior skills conceptual model. Data were weighted to represent US households with AYA and analyzed to identify factors independently associated with ever experiencing private time and discussions of confidentiality with a regular health-care provider (HCP). We examined the association of these experiences on AYA attitudes about health care.Results
Fifty-five percent of female and 49% of male AYA reported ever having had private time with an HCP and 55% of female and 44% of male AYA had spoken to an HCP about confidentiality. Independent predictors of having experienced private time and confidentiality included older age, race, higher household income, gender of the provider, amount of years with the provider, and involvement in risk behaviors. AYA who had experienced private time and confidentiality discussions had more positive attitudes about their providers, were more willing and comfortable discussing sensitive topics, and thought that these discussions should happen at younger ages.Conclusions
Although confidentiality and private time are important to AYA, many are not experiencing these components of care. Providing private time and discussions of confidentiality can improve the delivery of health care for young people by enhancing positive youth attitudes about preventive care. 相似文献170.
C. Jacquet F. Goehringer E. Baux J.A. Conrad M.O. Ganne Devonec J.L. Schmutz G. Mathey H. Tronel T. Moulinet I. Chary-Valckenaere T. May C. Rabaud 《Médecine et maladies infectieuses》2019,49(2):112-120