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   4294313篇
  免费   349949篇
  国内免费   14483篇
耳鼻咽喉   60272篇
儿科学   138810篇
妇产科学   114209篇
基础医学   656425篇
口腔科学   117839篇
临床医学   392620篇
内科学   774883篇
皮肤病学   107625篇
神经病学   363008篇
特种医学   169186篇
外国民族医学   753篇
外科学   652421篇
综合类   120997篇
现状与发展   25篇
一般理论   2621篇
预防医学   353472篇
眼科学   100461篇
药学   306202篇
  21篇
中国医学   11567篇
肿瘤学   215328篇
  2021年   50350篇
  2020年   35819篇
  2019年   58796篇
  2018年   74356篇
  2017年   56654篇
  2016年   62777篇
  2015年   75713篇
  2014年   109960篇
  2013年   175553篇
  2012年   124453篇
  2011年   129193篇
  2010年   125920篇
  2009年   127645篇
  2008年   115388篇
  2007年   122716篇
  2006年   131539篇
  2005年   125642篇
  2004年   126985篇
  2003年   116761篇
  2002年   105789篇
  2001年   166300篇
  2000年   160968篇
  1999年   146321篇
  1998年   65871篇
  1997年   61793篇
  1996年   59722篇
  1995年   60484篇
  1994年   54522篇
  1993年   50544篇
  1992年   106235篇
  1991年   101321篇
  1990年   97109篇
  1989年   94649篇
  1988年   86906篇
  1987年   85156篇
  1986年   80039篇
  1985年   78207篇
  1984年   65105篇
  1983年   57789篇
  1982年   46744篇
  1981年   43416篇
  1980年   40620篇
  1979年   54755篇
  1978年   44432篇
  1977年   39558篇
  1976年   36484篇
  1975年   36500篇
  1974年   39381篇
  1973年   37575篇
  1972年   35278篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
Journal of Immigrant and Minority Health - COVID-19 has disproportionally affected underrepresented minorities (URM) and low-income immigrants in the United States. The aim of the study is to...  相似文献   
63.
Vaccination is a vital health care initiative to prevent individual and population infection. To increase vaccination rates the federal government implemented the ‘No Jab, No Pay’ policy, where eligibility for several government benefits required children to be fully vaccinated by removing ‘conscientious objections’ and expanding the age range of children whose families receive benefits. This study assesses the impact of this policy at a local area within a single medical practice community in NSW, Australia. A retrospective clinical audit was performed between 2012 and 2017 on a single general practice's vaccination records for children ≤19 years. Catch-up vaccinations were assessed based on age at vaccination. Incidence of catch-up vaccinations was assessed for each of four years before and two years after the implementation of the ‘No Jab, No Pay’ policy in January 2016, along with the age of children and vaccination(s) given. Catch-up vaccinations were assessed temporally either side of implementation of ‘No Jab, No Pay’. Comparing the average annual vaccination catch-up incidence rate of 6.2% pre-implementation (2012–2015), there was an increase to 9.2% in 2016 (p < .001) and 7.8% in 2017 (p = .027). Secondary outcome measurement of catch-up vaccination incidence rates before (2012–2015) and after (2016–2017) ‘No Jab, No Pay’ implementation showed statistically significant increases for children aged 8–11 years (3.2%–5.6%, p = .038), 12–15 years (7.5%–14.7%, p < .001) and 16–19 years (3.3%–10.2%, p < .001) along with a statistically significant reduction in children aged 1–3 years (11.4%–6.2%, p = .015). Also, catch-up rates for DTPa significantly increased after program implementation. This study demonstrates that the Australian federal government vaccination policy ‘No Jab, No Pay’ was coincident with an increase in catch-up vaccinations within a rural NSW community served by one medical practice, especially for older children.  相似文献   
64.

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   
65.
Medicine, Health Care and Philosophy - In this paper, I will provide a phenomenological analysis of somatic obsessions at times present in obsessive–compulsive disorder. I will compare two...  相似文献   
66.
Münch  F.  Purbojo  A.  Wenzel  F.  Kohl  M.  Dittrich  S.  Rauh  M.  Zimmermann  R.  Kwapil  N. 《Der Anaesthesist》2022,71(11):882-892
Die Anaesthesiologie - Die Transfusion von Erythrozytenkonzentraten (EK) ist mit verschiedenen Nebenwirkungen assoziiert, die u. a. durch Lagerungsschäden an Erythrozyten hervorgerufen...  相似文献   
67.
68.
69.
70.
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