首页 | 本学科首页   官方微博 | 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   3471599篇
  免费   298855篇
  国内免费   13635篇
耳鼻咽喉   48582篇
儿科学   113108篇
妇产科学   90194篇
基础医学   550446篇
口腔科学   91103篇
临床医学   311795篇
内科学   621827篇
皮肤病学   91605篇
神经病学   296613篇
特种医学   137840篇
外国民族医学   724篇
外科学   538646篇
综合类   103067篇
现状与发展   23篇
一般理论   2347篇
预防医学   293453篇
眼科学   79237篇
药学   239326篇
  23篇
中国医学   9708篇
肿瘤学   164422篇
  2021年   55308篇
  2020年   35262篇
  2019年   58446篇
  2018年   71789篇
  2017年   54695篇
  2016年   60290篇
  2015年   74327篇
  2014年   108599篇
  2013年   173978篇
  2012年   94837篇
  2011年   95003篇
  2010年   117550篇
  2009年   121856篇
  2008年   82471篇
  2007年   86015篇
  2006年   96319篇
  2005年   91812篇
  2004年   93711篇
  2003年   84644篇
  2002年   74751篇
  2001年   110117篇
  2000年   104150篇
  1999年   102961篇
  1998年   66175篇
  1997年   63551篇
  1996年   61504篇
  1995年   56954篇
  1994年   51218篇
  1993年   47731篇
  1992年   72847篇
  1991年   69919篇
  1990年   66411篇
  1989年   64875篇
  1988年   60031篇
  1987年   58818篇
  1986年   55215篇
  1985年   55238篇
  1984年   49857篇
  1983年   45421篇
  1982年   41927篇
  1981年   39704篇
  1980年   37210篇
  1979年   40827篇
  1978年   35739篇
  1977年   32707篇
  1976年   30057篇
  1975年   28958篇
  1974年   29674篇
  1973年   28577篇
  1972年   26533篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
991.
Background: The opioid addiction and overdose crisis continues to ravage communities across the U.S. Maintenance pharmacotherapy using buprenorphine or methadone is the most effective intervention for Opioid Use Disorder (OUD), yet few have immediate and sustained access to these medications. Objectives: To address lack of medication access for people with OUD, the Missouri Department of Mental Health began implementing a Medication First (Med First) treatment approach in its publicly-funded system of comprehensive substance use disorder treatment programs. Methods: This Perspective describes the four principles of Med First, which are based on evidence-based guidelines. It draws conceptual comparisons between the Housing First approach to chronic homelessness and the Med First approach to pharmacotherapy for OUD, and compares state certification standards for substance use disorder (SUD) treatment (the traditional approach) to Med First guidelines for OUD treatment. Finally, the Perspective details how Med First principles have been practically implemented. Results: Med First principles emphasize timely access to maintenance pharmacotherapy without requiring psychosocial services or discontinuation for any reason other than harm to the client. Early results regarding medication utilization and treatment retention are promising. Feedback from providers has been largely favorable, though clinical- and system-level obstacles to effective OUD treatment remain. Conclusion: Like the Housing First model, Medication First is designed to decrease human suffering and activate the strengths and capacities of people in need. It draws on decades of research and facilitates partnerships between psychosocial and medical treatment providers to offer effective and life-saving care to persons with OUD.  相似文献   
992.
Purpose: Non-ambulatory persons with cerebral palsy are prone to low bone mineral density. In ambulatory persons with cerebral palsy, bone mineral density deficits are expected to be small or absent, but a consensus conclusion is lacking. In this systematic review bone mineral density in ambulatory persons with cerebral palsy (Gross Motor Function Classification Scales I–III) was studied.

Materials and methods: Medline, Embase, and Web of Science were searched. According to international guidelines, low bone mineral density was defined as Z-score?≤??2.0. In addition, we focused on Z-score?≤??1.0 because this may indicate a tendency towards low bone mineral density.

Results: We included 16 studies, comprising 465 patients aged 1–65?years. Moderate and conflicting evidence for low bone mineral density (Z-score?≤??2.0) was found for several body parts (total proximal femur, total body, distal femur, lumbar spine) in children with Gross Motor Function Classification Scales II and III. We found no evidence for low bone mineral density in children with Gross Motor Function Classification Scale I or adults, although there was a tendency towards low bone mineral density (Z-score?≤??1.0) for several body parts.

Conclusions: Although more high-quality research is needed, results indicate that deficits in bone mineral density are not restricted to non-ambulatory people with cerebral palsy.

  • Implications for Rehabilitation
  • Although more high-quality research is needed, including adults and fracture risk assessment, the current study indicates that deficits in bone mineral density are not restricted to non-ambulatory people with CP.

  • Health care professionals should be aware that optimal nutrition, supplements on indication, and an active lifestyle, preferably with weight-bearing activities, are important in ambulatory people with CP, also from a bone quality point-of-view.

  • If indicated, medication and fall prevention training should be prescribed.

  相似文献   
993.
994.
995.
996.
997.
998.
999.
1000.
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