全文获取类型
收费全文 | 5275篇 |
免费 | 480篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 69篇 |
儿科学 | 180篇 |
妇产科学 | 150篇 |
基础医学 | 758篇 |
口腔科学 | 50篇 |
临床医学 | 731篇 |
内科学 | 954篇 |
皮肤病学 | 108篇 |
神经病学 | 594篇 |
特种医学 | 105篇 |
外科学 | 540篇 |
综合类 | 44篇 |
一般理论 | 5篇 |
预防医学 | 663篇 |
眼科学 | 121篇 |
药学 | 327篇 |
中国医学 | 3篇 |
肿瘤学 | 361篇 |
出版年
2024年 | 16篇 |
2023年 | 126篇 |
2022年 | 86篇 |
2021年 | 422篇 |
2020年 | 249篇 |
2019年 | 336篇 |
2018年 | 319篇 |
2017年 | 253篇 |
2016年 | 272篇 |
2015年 | 231篇 |
2014年 | 294篇 |
2013年 | 350篇 |
2012年 | 450篇 |
2011年 | 464篇 |
2010年 | 221篇 |
2009年 | 187篇 |
2008年 | 278篇 |
2007年 | 243篇 |
2006年 | 216篇 |
2005年 | 204篇 |
2004年 | 156篇 |
2003年 | 176篇 |
2002年 | 139篇 |
2001年 | 15篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 20篇 |
1997年 | 7篇 |
1996年 | 7篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
排序方式: 共有5763条查询结果,搜索用时 218 毫秒
1.
2.
3.
4.
Few studies have examined the effects of parental incarceration (PI) on outcomes above and beyond other risk and adverse childhood experiences (ACEs). The objectives of this study were to (1) the associations between PI and mental health problems (attention, externalizing, internalizing, and total behavioral problems) and (2) the mediating role of current socioeconomic status and cumulative ACEs. An observational and cross-sectional design was employed. Analyses included hierarchical multivariable linear regression modeling. The analytic sample included 613 adolescents (11–17?years). On average, youth exposed to PI experienced three times as many ACEs compared with youth unexposed. Youth exposed to PI were more likely to have behavioral problems than their unexposed peers. The main effect for all models was attenuated by current economic hardship as well as exposure to increasing numbers of ACEs. Exposure to PI can be viewed as a marker of accumulative risk for intervention since youth impacted by PI are more likely to experience behavioral difficulties and associated adverse childhood experiences. Due to the associated adversity that impact youth exposed to PI, mental health providers need to be able to identify and screen for symptoms associated with trauma. 相似文献
5.
Raffaella Marcheselli Alessia Bari Tamar Tadmor Luigi Marcheselli Maria Christina Cox Robel Papotti Angela Ferrari Luca Baldini Paolo Gobbi Ilana Levy Giuseppe Pugliese Massimo Federico Aaron Polliack Samantha Pozzi Stefano Sacchi 《Hematological oncology》2020,38(4):439-445
The main purpose of this study was to assess whether it is possible to improve the prognostic impact of international prognostic index (IPI) score by combining it with peripheral blood counts. Thus, we evaluated the prognostic power of lymphocyte, neutrophil, and monocyte counts in 520 patients with diffuse large B cell lymphoma treated with R-CHOP, confirming that these parameters have a strong impact on overall survival (OS). Using revised IPI (R-IPI), 44% of patients were categorized as poor-risk and showed an OS at 5 years of 46%. As OS at 5 years of the 520 patients is 67%, it is clearly evident that R-IPI tends to overestimate the proportion of patients with poor prognosis. Accordingly, in an attempt to improve the discriminating power of R-IPI, we evaluated and compared three different scores by combining the neutrophil lymphocyte ratio (NLR) and absolute monocyte count (AMC) with the following values: (a) IPI score 3-5, (b) age > 60 years and performance status, (c) age ≥ 65 years and LDH > ULN. The three indexes studied, had a similar 5 years OS for the high-risk group (46%-52%), but the proportion of patients classified as poor-risk were 37%, 20%, and 32%, respectively, which are lower than 44% identified with R-IPI. Thus, while R-IPI overestimates the number of high-risk patients, after applying our models, it is possible to recognize patients who are truly at high-risk. Of the three scores, the most accurate appears to be that based on NLR, AMC, LDH > ULN and age ≥ 65 years, which identifies 32% of high-risk patients, correlating well with what is seen in clinical practice. 相似文献
6.
7.
Jessica Roberts MBBS Jason Powell MBBS MClinRes PhD MRCS Jacob Begbie MBBS MRes Gerard Siou MBBS MD FRCS Claire McLarnon MBBS MSc FRCS Andrew Welch MBBS FRCS Michael McKean MBChB MD FRCPCH Mathew Thomas MBChB MRCPCH PhD Anne-Marie Ebdon MBBS MRCPCH FRACP Samantha Moss MBBS MRCPCH MD Rachel S. Agbeko MSc MD PhD FRCPCH FFICM Jonathan H. Smith MBChB MRCP FRCA Malcolm Brodlie MB ChB PhD MRCPCH Christopher O'Brien MBBS FRCPCH Steven Powell MBBS MSc FRCS 《The Laryngoscope》2020,130(5):E375-E380
8.
9.
10.
Daniel Poremski Mark Alexander Tina Fang Giles Ming‐Yee Tan Samantha Ong Alex Su Daniel Fung Hong Choon Chua 《Asia-Pacific psychiatry》2020,12(1)
People with mental illness may be unable to provide critical input about the care they wish to receive during a psychiatric crisis because of altered mental states. It is therefore imperative that clinicians seek to understand service users' wishes for care while they are well and able to provide meaningful input into the discussion. Achieving such an end may be done by discussing and completing a psychiatric advance directive. However, very few Asian countries have legislation that supports such advance directives. The present article seeks to give physicians more information about advance psychiatric directives and the potential role they could play to improve the healthcare provided in Asia to people at risk of losing capacity due to a mental illness. The degree to which mental health legislation supports psychiatric advance directives is documented for each country of South East Asia and Eastern Asia. 相似文献