全文获取类型
收费全文 | 149330篇 |
免费 | 11291篇 |
国内免费 | 3816篇 |
专业分类
耳鼻咽喉 | 1086篇 |
儿科学 | 2620篇 |
妇产科学 | 2022篇 |
基础医学 | 8286篇 |
口腔科学 | 2982篇 |
临床医学 | 17018篇 |
内科学 | 20920篇 |
皮肤病学 | 2716篇 |
神经病学 | 7268篇 |
特种医学 | 4348篇 |
外国民族医学 | 39篇 |
外科学 | 13230篇 |
综合类 | 21213篇 |
现状与发展 | 23篇 |
一般理论 | 2篇 |
预防医学 | 8741篇 |
眼科学 | 2164篇 |
药学 | 19768篇 |
81篇 | |
中国医学 | 11499篇 |
肿瘤学 | 18411篇 |
出版年
2024年 | 122篇 |
2023年 | 2421篇 |
2022年 | 3791篇 |
2021年 | 5954篇 |
2020年 | 5855篇 |
2019年 | 5302篇 |
2018年 | 5078篇 |
2017年 | 5541篇 |
2016年 | 5881篇 |
2015年 | 5785篇 |
2014年 | 10899篇 |
2013年 | 13727篇 |
2012年 | 9238篇 |
2011年 | 9980篇 |
2010年 | 8036篇 |
2009年 | 7384篇 |
2008年 | 7274篇 |
2007年 | 7530篇 |
2006年 | 6717篇 |
2005年 | 5877篇 |
2004年 | 4767篇 |
2003年 | 4237篇 |
2002年 | 3416篇 |
2001年 | 3022篇 |
2000年 | 2533篇 |
1999年 | 2040篇 |
1998年 | 1547篇 |
1997年 | 1322篇 |
1996年 | 1078篇 |
1995年 | 1059篇 |
1994年 | 895篇 |
1993年 | 679篇 |
1992年 | 616篇 |
1991年 | 532篇 |
1990年 | 465篇 |
1989年 | 408篇 |
1988年 | 415篇 |
1987年 | 357篇 |
1986年 | 304篇 |
1985年 | 361篇 |
1984年 | 342篇 |
1983年 | 228篇 |
1982年 | 231篇 |
1981年 | 214篇 |
1980年 | 192篇 |
1979年 | 170篇 |
1978年 | 121篇 |
1977年 | 93篇 |
1976年 | 108篇 |
1975年 | 97篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
《Research in social & administrative pharmacy》2022,18(9):3694-3698
In this paper, we argue that understanding and addressing the problem of poor-quality medical products requires a more interdisciplinary approach than has been evident to date. While prospective studies based on rigorous standardized methodologies are the gold standard for measuring the prevalence of poor-quality medical products and understanding their distribution nationally and internationally, they should be complemented by social science research to unpack the complex set of social, economic, and governance factors that underlie these patterns. In the following sections, we discuss specific examples of prospective quality surveys and of social science studies, highlighting the value of cross-sector partnerships in driving high-quality, policy-relevant research in this area. 相似文献
2.
BackgroundFindings on the usefulness of massage therapy (MT) in postoperative pain management are often inconsistent among studies.ObjectivesThis study’s aim is to conduct a meta-analysis of randomized controlled trials (RCT) to clarify the effects of massage therapy in the treatment of postoperative pain.MethodsThree databases (PubMed, Embase, and Cochrane Central Register of Controlled Trials) were searched for RCTs published from database inception through January 26, 2021. The primary outcome was pain relief. The quality of RCTs was appraised with the Cochrane Collaboration risk of bias tool. The random-effect model was used to calculate the effect sizes and standardized mean difference (SMD) with 95 % confidential intervals (CIs) as a summary effect. The heterogeneity test was conducted through I2. Subgroup and sensitivity analyses were used to explore the source of heterogeneity. Possible publication bias was assessed using visual inspection of funnel plot asymmetry.ResultsThe analysis included 33 RCTs and showed that MT is effective in reducing postoperative pain (SMD, −1.32; 95 % CI, −2.01 to −0.63; p = 0.0002; I2 = 98.67 %). A similar significant effect was found for both short (immediate assessment) and long terms (assessment performed 4–6 weeks after the MT). Remarkably, we found neither the duration per session nor the dose had an impact on the effect of MT and there seemed to be no difference in the effects of different MT types. In addition, MT seemed to be more effective for adults. Furthermore, MT had better analgesic effects on cesarean section and heart surgery than orthopedic surgery.LimitationsPublication bias is possible due to the inclusion of studies in English only. Additionally, the included studies were extremely heterogeneous. Double-blind research on MT is difficult to implement, and none of the included studies is double-blind. There was some heterogeneity and publication bias in the included studies. In addition, there is no uniform evaluation standard for the operation level of massage practitioners, which may lead to research implementation bias.ConclusionsMT is effective in reducing postoperative pain in both short and long terms. 相似文献
3.
4.
5.
Wan-Jun Zhang Li-Qiang Wu Jun Wang Sheng-Yun Lin Bo Wang 《World Journal of Clinical Cases》2022,10(23):8242-8248
ABSTRACT
BACKGROUND
Hepatitis-associated aplastic anemia (HAAA) is a rare condition. Patients with HAAA usually present with acute hepatitis, jaundice and significantly increased transaminase. After 1–2 mo, hepatitis gradually improves, but progressive hemocytopenia, bone marrow hematopoietic failure, and severe or extremely severe aplastic anemia are manifest. Most cases of HAAA are fulminant and usually lethal if left untreated. The literature on Epstein–Barr virus (EBV)-associated HAAA is sparse.
CASE SUMMARY
We report a 30-year-old man who was admitted to our hospital because of pale yellow urine and skin with a simultaneous decrease in peripheral blood ternary cells. We made a diagnosis of EBV-associated HAAA. The treatment strategy for this patient included eltrombopag, an immunosuppressive regimen of rabbit anti-human thymocyte immunoglobulin, cyclosporine, and supportive care. The patient was discharged in normal physical condition after five months. A hemogram performed on follow-up revealed that he had achieved a complete response.
CONCLUSION
Eltrombopag plus anti-thymocyte globubin and cyclosporine may be a therapeutic option for EBV-associated HAAA.Larger studies are warranted to confirm. 相似文献
6.
Major depressive disorder is a serious and common neuropsychiatric disorder that affects more than 350 million people worldwide. Electroconvulsive therapy is the oldest and most effective treatment available for the treatment of severe major depressive disorder. Electroconvulsive therapy modifies structural network changes in patients with major depressive disorder and schizophrenia. And it can also affect neuroinflammatory responses and may have neuroprotective effects. Electroconvulsive therapy plays an irreplaceable role in the treatment of major depressive disorder. 相似文献
7.
8.
9.
10.