全文获取类型
| 收费全文 | 248028篇 |
| 免费 | 12579篇 |
| 国内免费 | 419篇 |
专业分类
| 耳鼻咽喉 | 3317篇 |
| 儿科学 | 7711篇 |
| 妇产科学 | 5033篇 |
| 基础医学 | 35583篇 |
| 口腔科学 | 5612篇 |
| 临床医学 | 19852篇 |
| 内科学 | 54467篇 |
| 皮肤病学 | 6941篇 |
| 神经病学 | 22255篇 |
| 特种医学 | 7675篇 |
| 外国民族医学 | 103篇 |
| 外科学 | 31387篇 |
| 综合类 | 1184篇 |
| 一般理论 | 63篇 |
| 预防医学 | 22315篇 |
| 眼科学 | 4823篇 |
| 药学 | 17331篇 |
| 中国医学 | 721篇 |
| 肿瘤学 | 14653篇 |
出版年
| 2023年 | 1288篇 |
| 2022年 | 882篇 |
| 2021年 | 3638篇 |
| 2020年 | 2190篇 |
| 2019年 | 4051篇 |
| 2018年 | 7702篇 |
| 2017年 | 5072篇 |
| 2016年 | 5148篇 |
| 2015年 | 5698篇 |
| 2014年 | 6037篇 |
| 2013年 | 9707篇 |
| 2012年 | 16700篇 |
| 2011年 | 16697篇 |
| 2010年 | 8371篇 |
| 2009年 | 6319篇 |
| 2008年 | 14291篇 |
| 2007年 | 15341篇 |
| 2006年 | 14188篇 |
| 2005年 | 14018篇 |
| 2004年 | 13175篇 |
| 2003年 | 12065篇 |
| 2002年 | 11445篇 |
| 2001年 | 6684篇 |
| 2000年 | 6729篇 |
| 1999年 | 6036篇 |
| 1998年 | 1065篇 |
| 1997年 | 866篇 |
| 1996年 | 792篇 |
| 1992年 | 3438篇 |
| 1991年 | 3147篇 |
| 1990年 | 2967篇 |
| 1989年 | 2722篇 |
| 1988年 | 2561篇 |
| 1987年 | 2396篇 |
| 1986年 | 2287篇 |
| 1985年 | 2090篇 |
| 1984年 | 1531篇 |
| 1983年 | 1323篇 |
| 1982年 | 753篇 |
| 1979年 | 1338篇 |
| 1978年 | 942篇 |
| 1977年 | 884篇 |
| 1975年 | 913篇 |
| 1974年 | 1099篇 |
| 1973年 | 1095篇 |
| 1972年 | 1044篇 |
| 1971年 | 1018篇 |
| 1970年 | 937篇 |
| 1969年 | 985篇 |
| 1968年 | 876篇 |
排序方式： 共有10000条查询结果，搜索用时 515 毫秒
101.
102.
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103.
104.
105.
106.
Luis Miguel Azogil-López Juan José Pérez-Lázaro Patricia Ávila-Pecci Esther María Medrano-Sánchez María Valle Coronado-Vázquez 《Atencion primaria / Sociedad Espa?ola de Medicina de Familia y Comunitaria》2019,51(5):278-284
Aim
The purpose of this study is to find out whether telephone referral from Primary Health Care to Internal Medicine Consult manages to reduce waiting days as compared to traditional referral. This study also aims to know how acceptable is the telephone referral to general practitioners and their patients.Design
No blind randomized controlled clinical trial.Setting
Northern Huelva Health District.Participants
154 patients.Interventions
Patients referrals from intervention clinicians were sent via telephone consultation, whereas patients referrals from control clinicians were sent by traditional via.Measurements
Number of days from referral request to Internal Medicine Consult. Number of telephone and traditional referrals. Number of doctors and patients denied. Denial reasons.Results
A statistically significant difference was found between groups, with an average of 27 (21-34) days. Among General Practitioners, 8 of the first 58 total doctors after randomization and, subsequently, 6 of the 20 doctors of the test group refused to engage in the trial because they considered “excessive time and effort consuming”. 50% of patients referred by the 14 General Practitioners finally randomized to the intervention group were denied referral by telephone due to patient's complexity.Conclusions
Telephone referral significantly reduces waiting days for Internal Medicine consult. This type of referral did not mean an “excessive time and effort consuming” to General Practitioners and was not all that beneficial to complex patients 相似文献107.
108.
109.
Rosario Fernández-Plata Rogelio Pérez-Padilla Rodrigo Del Río-Hidalgo Cecilia García-Sancho Laura Gochicoa-Rangel Christian Rodríguez-Hernández Luis Torre-Bouscoulet David Martínez-Briseño 《Archivos de bronconeumología》2019,55(10):513-518
IntroductionPeople with Down syndrome (DS) have high respiratory morbidity, evaluating their respiratory health with standardized, objective tests is desirable. Thus, the objective of this study was to evaluate the technical quality of Pulmonary Function Tests (PFTs) to determine which ones are most suitable for this population.MethodsParticipants included children, teenagers and adults with DS, 5 years of age or older (n = 302). The technical quality of the impulse oscillometry system (IOS), forced spirometry, lung-diffusing capacity for carbon monoxide (DLCO), and 6-min walk test (6MWT) were analyzed by age group. Capnography and pulse oximetry were included in the study. Technical quality was determined on the basis of current international PFTs standards.ResultsFifty-one percent of participants were males. A total of 184 participants (71%) who completed the IOS fulfilled the quality criteria, while 210 (70%) completed the 6MWT. Performance on forced spirometry and DLCO was poor. All pulse oximetries and 96% percent heart rates obtained had good quality, but exhaled carbon dioxide (PetCO2) and respiratory rate (RR) showed deficient repeatability.ConclusionsIOS appears to be the most reliable instrument for evaluating lung mechanics in individuals with DS. 相似文献
110.