全文获取类型
收费全文 | 2442篇 |
免费 | 91篇 |
国内免费 | 35篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 31篇 |
妇产科学 | 43篇 |
基础医学 | 298篇 |
口腔科学 | 25篇 |
临床医学 | 224篇 |
内科学 | 525篇 |
皮肤病学 | 26篇 |
神经病学 | 137篇 |
特种医学 | 283篇 |
外科学 | 196篇 |
综合类 | 33篇 |
一般理论 | 1篇 |
预防医学 | 244篇 |
眼科学 | 77篇 |
药学 | 198篇 |
中国医学 | 1篇 |
肿瘤学 | 224篇 |
出版年
2021年 | 11篇 |
2019年 | 15篇 |
2018年 | 25篇 |
2017年 | 24篇 |
2016年 | 29篇 |
2015年 | 42篇 |
2014年 | 56篇 |
2013年 | 64篇 |
2012年 | 93篇 |
2011年 | 91篇 |
2010年 | 84篇 |
2009年 | 76篇 |
2008年 | 94篇 |
2007年 | 135篇 |
2006年 | 118篇 |
2005年 | 118篇 |
2004年 | 87篇 |
2003年 | 96篇 |
2002年 | 83篇 |
2001年 | 102篇 |
2000年 | 82篇 |
1999年 | 82篇 |
1998年 | 58篇 |
1997年 | 61篇 |
1996年 | 48篇 |
1995年 | 32篇 |
1994年 | 27篇 |
1993年 | 29篇 |
1992年 | 38篇 |
1991年 | 49篇 |
1990年 | 46篇 |
1989年 | 55篇 |
1988年 | 51篇 |
1987年 | 34篇 |
1986年 | 32篇 |
1985年 | 31篇 |
1984年 | 19篇 |
1983年 | 18篇 |
1981年 | 22篇 |
1979年 | 21篇 |
1978年 | 18篇 |
1975年 | 14篇 |
1974年 | 12篇 |
1973年 | 11篇 |
1972年 | 14篇 |
1971年 | 12篇 |
1933年 | 12篇 |
1932年 | 14篇 |
1931年 | 21篇 |
1926年 | 11篇 |
排序方式: 共有2568条查询结果,搜索用时 15 毫秒
51.
Yochai Birnbaum Miguel Fiol Kjell Nikus Javier Garcia Niebla Ljuba Bacharova Sergio Dubner Wojciech Zareba Peter W. Macfarlane Antonio Luiz Ribeiro Iwona Cygankiewicz Antoni Bayes de Luna 《Annals of noninvasive electrocardiology》2020,25(5)
The Fourth Universal Definition of Myocardial Infarction (FUDMI) focuses on the distinction between nonischemic myocardial injury and myocardial infarction (MI), along with the role of cardiovascular magnetic resonance, in order to define the etiology of myocardial injury. As a consequence, there is less emphasis on updating the parts of the definition concerning the electrocardiographic (ECG) changes related to MI. Evidence of myocardial ischemia is a prerequisite for the diagnosis of MI, and the ECG is the main available tool for (a) detecting acute ischemia, (b) triage, and (c) risk stratification upon presentation. This review focuses on multiple aspects of ECG interpretation that we firmly believe should be considered for incorporation in any future update to the Universal Definition of MI. 相似文献
52.
53.
Birnbaum Julia Geyer Christine Kirchberg Franca F. Beulshausen Meike Manios Yannis Koletzko Berthold 《Sport Sciences for Health》2019,15(1):175-181
Sport Sciences for Health - In this cross-sectional study, we examined the association of selected basic motor abilities with biological (sex, age, and BMI), sociodemographic [socio-economic status... 相似文献
54.
Charles Dzviga Catherine Matevi Philippe Bonniaud Fran?ois Lavaud Bruno Girodet Joelle Birnbaum Claude Lambert the Interest Group on Insect Venom Hypersensitivity Allergy from the French Society of Allergology French Federation of Continuous Medical Education in Allergology 《Archives of Medical Science》2016,12(1):150-155
Introduction
Venom immunotherapy (VIT) is the only efficient prevention for sting-induced anaphylaxis, but its application is not without risks and needs precautions and standardization. European guidelines were proposed in 2005, but recent practice surveys and more recent knowledge raise the need for an update. The aim of this study was to analyze VIT practices in France, based on previous surveys in Europe but also extended to outcome event management.Material and methods
A paper questionnaire was sent widely to persons involved in venom treatment.Results
Eighty-six responses could be included from physicians actively involved in VIT induction evenly distributed in France. The survey shows that VIT was engaged from grade III down to grade I reactions, starting preferentially with the ultra-rush protocol. Premedication was used by 42% only and risks induced by co-treatment with β-blockers were well known but not with angiotensin-converting enzyme inhibitors. However, side effects were very variably managed from arrest to enhancement in doses, time-delay or duration. Similarly, we observed a large discrepancy in treatment evaluation (skin tests, biology, timing and interpretation), decision making for treatment termination (when and how long to be prolonged) and post-treatment follow-up (adrenaline kit, event record) as well as procedures in case of late relapse (new induction, different doses).Conclusions
Our study shows that most recommendations were fully or partially followed and may need reminding, but many points need to be completed or updated with new tools and knowledge acquired during the last 10 years. 相似文献55.
56.
Neoadjuvant Therapy for Rectal Cancer: Histologic Response of the Primary Tumor Predicts Nodal Status 总被引:1,自引:1,他引:1
Read TE Andujar JE Caushaj PF Johnston DR Dietz DW Myerson RJ Fleshman JW Birnbaum EH Mutch MG Kodner IJ 《Diseases of the colon and rectum》2004,47(6):825-831
PURPOSE: This study was designed to compare histologic T and N stages in patients with rectal adenocarcinoma undergoing various neoadjuvant radiotherapy regimens and proctectomy, in an attempt to determine if final histologic stage of the mural tumor predicts nodal status.METHODS: Data were collected from computerized databases at two institutions on 649 consecutive patients who underwent neoadjuvant radiotherapy or chemoradiotherapy and proctectomy for primary adenocarcinoma of the rectum from 1990 to 2002.RESULTS: Five patients were excluded because of incomplete pathology data sets, leaving a study population of 644. Patients underwent neoadjuvant radiotherapy alone (2,000 cGy in 5 fractions, n = 191; or 4,500 cGy in 25 fractions, n = 259) or chemoradiation (4,500 cGy in 25 fractions with concurrent 5-fluorouracil, n = 194). Histologic stage of the remaining mural tumor (ypT) correlated with nodal status (ypN). Lymph nodes harboring metastatic tumor were found in 1 of 42 (2 percent) ypT0 patients, 2 of 45 (4 percent) ypT1 patients, 43 of 186 (23 percent) ypT2 patients, 158 of 338 (47 percent) ypT3 patients, and 16 of 33 (48 percent) ypT4 patients (P < 0.001, chi-squared test). The probability of finding ypN+ disease was 3 of 87 (3 percent) in patients with ypT0-1 residual primary tumors vs. 220 of 557 (39 percent) in patients with ypT2-4 residual primary tumors (P < 0.0001; Fishers exact test).CONCLUSIONS: Nodal metastases are rare in patients whose mural tumor burden shrinks to ypT0-1 after neoadjuvant radiotherapy. If transanal excision is offered to select patients with distal rectal cancer, it is reasonable to select those who have an excellent clinical response to neoadjuvant therapy for transanal excision, and then reserve proctectomy for patients proven to have residual ypT2-4 disease.Read at the meeting of The American Society of Colon and Rectal Surgeons, New Orleans, Louisiana, June 21 to 26, 2003. 相似文献
57.
58.
Emilie Mamessier Joo Y. Song Franziska C. Eberle Svetlana Pack Charlotte Drevet Bruno Chetaille Ziedulla Abdullaev José Adela?de Daniel Birnbaum Max Chaffanet Stefania Pittaluga Sandrine Roulland Andreas Chott Elaine S. Jaffe Bertrand Nadel 《Haematologica》2014,99(3):481-488
The pathogenesis of follicular lymphoma is a multi-hit process progressing over many years through the accumulation of numerous genetic alterations. Besides the hallmark t(14;18), it is still unclear which other oncogenic hits contribute to the early steps of transformation and in which precursor stages these occur. To address this issue, we performed high-resolution comparative genomic hybridization microarrays on laser-capture micro-dissected cases of follicular lymphoma in situ (n=4), partial involvement by follicular lymphoma (n=4), and duodenal follicular lymphoma (n=4), assumed to represent, potentially, the earliest stages in the evolution of follicular lymphoma. Cases of reactive follicular hyperplasia (n=2), uninvolved areas from follicular lymphoma in situ lymph nodes, follicular lymphoma grade 1–2 (n=5) and follicular lymphoma grade 3A (n=5) were used as controls. Surprisingly, alterations involving several relevant (onco)genes were found in all entities, but at significantly lower proportions than in overt follicular lymphoma. While the number of alterations clearly assigns all these entities as precursors, the pattern of partial involvement by follicular lymphoma alterations was quantitatively and qualitatively closer to that of follicular lymphoma, indicating significant selective pressure in line with its faster rate of progression. Among the most notable alterations, we observed and validated deletions of 1p36 and gains of the 7p and 12q chromosomes and related oncogenes, which include some of the most recurrent oncogenic alterations in overt follicular lymphoma (TNFRSF14, EZH2, MLL2). By further delineating distinctive and hierarchical molecular and genetic features of early follicular lymphoma entities, our analysis underlines the importance of applying appropriate criteria for the differential diagnosis. It also provides a first set of candidates likely to be involved in the cascade of hits that pave the path of the various progression phases to follicular lymphoma development. 相似文献
59.
60.