收费全文 | 3368579篇 |
免费 | 249308篇 |
国内免费 | 8830篇 |
耳鼻咽喉 | 45573篇 |
儿科学 | 110069篇 |
妇产科学 | 91799篇 |
基础医学 | 473799篇 |
口腔科学 | 94260篇 |
临床医学 | 308883篇 |
内科学 | 661673篇 |
皮肤病学 | 77196篇 |
神经病学 | 277650篇 |
特种医学 | 130945篇 |
外国民族医学 | 952篇 |
外科学 | 503383篇 |
综合类 | 72805篇 |
现状与发展 | 5篇 |
一般理论 | 1290篇 |
预防医学 | 265834篇 |
眼科学 | 74804篇 |
药学 | 246729篇 |
11篇 | |
中国医学 | 6625篇 |
肿瘤学 | 182432篇 |
2019年 | 26104篇 |
2018年 | 36850篇 |
2017年 | 28273篇 |
2016年 | 32544篇 |
2015年 | 36707篇 |
2014年 | 50854篇 |
2013年 | 76827篇 |
2012年 | 101620篇 |
2011年 | 107794篇 |
2010年 | 64954篇 |
2009年 | 62198篇 |
2008年 | 100534篇 |
2007年 | 107035篇 |
2006年 | 108842篇 |
2005年 | 104648篇 |
2004年 | 100877篇 |
2003年 | 97278篇 |
2002年 | 93702篇 |
2001年 | 161993篇 |
2000年 | 166415篇 |
1999年 | 140001篇 |
1998年 | 40402篇 |
1997年 | 35939篇 |
1996年 | 36396篇 |
1995年 | 35377篇 |
1994年 | 32640篇 |
1993年 | 30533篇 |
1992年 | 110361篇 |
1991年 | 106560篇 |
1990年 | 103219篇 |
1989年 | 99369篇 |
1988年 | 91289篇 |
1987年 | 89708篇 |
1986年 | 84392篇 |
1985年 | 80646篇 |
1984年 | 60412篇 |
1983年 | 51125篇 |
1982年 | 30391篇 |
1981年 | 27224篇 |
1979年 | 53898篇 |
1978年 | 38295篇 |
1977年 | 32326篇 |
1976年 | 30016篇 |
1975年 | 32036篇 |
1974年 | 38016篇 |
1973年 | 36262篇 |
1972年 | 33870篇 |
1971年 | 31439篇 |
1970年 | 28915篇 |
1969年 | 27510篇 |
Female Genital mutilation/cutting (FGM/C) is associated with enduring psychiatric complications. In this study, we investigate the rates of co-morbid abuses and polyvictimization experienced by survivors of FGM/C. This is a sub-analysis of a cohort study examining the patient population at the EMPOWER Center for Survivors of Sex Trafficking and Sexual Violence in New York City. A retrospective chart-review of electronic medical records was conducted for all consenting adult patients who had FGM/C and had an intake visit between January 16, 2014 and March 6, 2020. Of the 80 participants, ages ranged from 20 to 62 years with a mean of 37.4 (SD?=?9.1) years. In addition to FGM/C, participants were victims of physical abuse (43; 53.8%), emotional abuse (35; 43.8%), sexual abuse (35; 43.8%), forced marriage (20; 25%), child marriage (13; 16.3%), and sex trafficking (1; 1.4%). There was a high degree of polyvictimization, with 41 (51.2%) experiencing 3 or more of the aforementioned abuses. Having FGM/C on or after age 13 or having a higher total abuse score was also found to be strong predictors of depression and PTSD. The high rates of polyvictimization among survivors of FGM/C are associated with development of depression and PTSD. Despite co-morbid abuses, patients still attribute substantial psychiatric symptoms to their FGM/C. Health care providers should understand the high risk of polyvictimization when caring for this patient population.
相似文献Background
Hyperglycaemia is common in patients with acute brain injury admitted to an intensive care unit (ICU). Many studies have found associations between development of hyperglycaemia and increased mortality in hospitalised patients. However, the optimal target for blood glucose control is unknown. We want to conduct a systematic review with meta-analysis and trial sequential analysis to explore the beneficial and harmful effects of restrictive versus liberal glucose control on patient outcomes in adults with severe acute brain injury.Methods
We will systematically search medical databases including CENTRAL, Embase, MEDLINE and trial registries. We will search the following websites for ongoing or unpublished trials: http://www.controlled-trials.com/ , http://www.clinicaltrials.gov/ , www.eudraCT.com , http://centerwatch.com/ , The Cochrane Library's CENTRAL, PubMed, EMBASE, Science Citation Index Expanded and CINAHL. Two authors will independently review and select trials and extract data. We will include randomised trials comparing levels of glucose control in our analyses and observational studies will be included to address potential harms. The primary outcomes are defined as all-cause mortality, functional outcome and health-related quality of life. Secondary outcomes include serious adverse events including hypoglycaemia, length of ICU stay and duration of mechanical ventilation, and explorative outcomes including intracranial pressure and infection. Trial Sequential Analysis will be used to investigate the risk of type I error due to repetitive testing and to further explore imprecision. Quality of trials will be evaluated using the Cochrane Risk of Bias tool, and quality of evidence will be assessed using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach.Discussion
The results of the systematic review will be disseminated through peer-reviewed publication. With the review, we hope to inform future randomised clinical trials and improve clinical practice. 相似文献![点击此处可从《Communications In Computational Physics》网站下载免费的PDF全文](/ch/ext_images/free.gif)