首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3076908篇
  免费   266568篇
  国内免费   13397篇
医药卫生   3356873篇
  2021年   55089篇
  2020年   35301篇
  2019年   58344篇
  2018年   71074篇
  2017年   53780篇
  2016年   59259篇
  2015年   73717篇
  2014年   108050篇
  2013年   173386篇
  2012年   86440篇
  2011年   85706篇
  2010年   115814篇
  2009年   120242篇
  2008年   72782篇
  2007年   75145篇
  2006年   86141篇
  2005年   81609篇
  2004年   83555篇
  2003年   74505篇
  2002年   64349篇
  2001年   85605篇
  2000年   77526篇
  1999年   80959篇
  1998年   63472篇
  1997年   61553篇
  1996年   59245篇
  1995年   54693篇
  1994年   48863篇
  1993年   45598篇
  1992年   54132篇
  1991年   52252篇
  1990年   49289篇
  1989年   49398篇
  1988年   45581篇
  1987年   44417篇
  1986年   42224篇
  1985年   42798篇
  1984年   40932篇
  1983年   37920篇
  1982年   38626篇
  1981年   36662篇
  1980年   34609篇
  1979年   32603篇
  1978年   30554篇
  1977年   28265篇
  1976年   25966篇
  1975年   24655篇
  1974年   24495篇
  1973年   23390篇
  1972年   21964篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
IntroductionHip displacement is common in cerebral palsy (CP) and is related to the severity of neurological and functional impairment. It is a silent, but progressive disease, and can result in significant morbidity and decreased quality of life, if left untreated. The pathophysiology of hip displacement in CP is a combination of hip flexor-adductor muscle spasticity, abductor muscle weakness, and delayed weight-bearing, resulting in proximal femoral deformities and progressive acetabular dysplasia. Due to a lack of symptoms in the early stages of hip displacement, the diagnosis is easily missed. Awareness of this condition and regular surveillance by clinical examination and serial radiographs of the hips are the key to early diagnosis and treatment.Hip surveillance programmesSeveral population-based studies from around the world have demonstrated that universal hip surveillance in children with CP allows early detection of hip displacement and appropriate early intervention, with a resultant decrease in painful dislocations. Global hip surveillance models are based upon the patients’ age, functional level determined by the Gross Motor Function Classification system (GMFCS), gait classification, standardized clinical exam, and radiographic indices such as the migration percentage (MP), as critical indicators of progressive hip displacement.ConclusionDespite 25 years of evidence showing the efficacy of established hip surveillance programmes, there is poor awareness among healthcare professionals in India about the importance of regular hip surveillance in children with CP. There is a need for professional organizations to develop evidence-based guidelines for hip surveillance which are relevant to the Indian context.  相似文献   
53.
54.
55.
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years.  相似文献   
56.
57.
Abstract

Purpose

Financial hardship can be a major cause of distress among persons with cancer, resulting in chronic stress and impacting physical and emotional health. This paper provides an analysis of the lived experience of cancer patients’ financial hardship from diagnosis to post-treatment.  相似文献   
58.
59.
60.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号