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   2435290篇
  免费   200515篇
  国内免费   8222篇
耳鼻咽喉   32023篇
儿科学   80205篇
妇产科学   68392篇
基础医学   340274篇
口腔科学   66752篇
临床医学   221442篇
内科学   490602篇
皮肤病学   57871篇
神经病学   202495篇
特种医学   96179篇
外国民族医学   709篇
外科学   370668篇
综合类   58162篇
现状与发展   4篇
一般理论   834篇
预防医学   195877篇
眼科学   54011篇
药学   171221篇
  6篇
中国医学   5017篇
肿瘤学   131283篇
  2018年   26588篇
  2017年   20607篇
  2016年   23936篇
  2015年   26782篇
  2014年   37739篇
  2013年   56421篇
  2012年   72765篇
  2011年   77900篇
  2010年   47192篇
  2009年   45508篇
  2008年   72312篇
  2007年   76683篇
  2006年   77932篇
  2005年   75619篇
  2004年   72220篇
  2003年   69454篇
  2002年   66490篇
  2001年   118741篇
  2000年   121756篇
  1999年   101414篇
  1998年   29909篇
  1997年   26934篇
  1996年   27682篇
  1995年   27069篇
  1994年   24918篇
  1993年   23429篇
  1992年   80355篇
  1991年   77570篇
  1990年   74491篇
  1989年   70985篇
  1988年   65533篇
  1987年   64210篇
  1986年   60370篇
  1985年   57994篇
  1984年   44247篇
  1983年   37353篇
  1982年   23174篇
  1981年   20693篇
  1980年   19287篇
  1979年   39605篇
  1978年   28379篇
  1977年   23774篇
  1976年   22060篇
  1975年   22836篇
  1974年   27161篇
  1973年   26129篇
  1972年   24386篇
  1971年   22347篇
  1970年   20866篇
  1969年   19414篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
122.

Background

Refractory acute myeloid leukemia (AML) includes AML includes failure of disease to respond to standard induction chemotherapy, relapse within 6 months after first CR, and 2 or more relapses. The outcome of these patients is usually very poor; only a small proportion can be rescued by allogenic hematopoietic stem-cell transplantation (allo-HSCT). The aim of this study was to evaluate the efficacy and feasibility of allo-HSCT in patients with refractory AML.

Patients and Methods

We retrospectively analyzed the clinical outcome of 91 patients who were diagnosed with treatment-refractory AML at Hacettepe University Hospital between January 2002 and June 2018. Patients' disease status included refractory AML, defined as failure to respond to standard induction chemotherapy and relapse within 6 months after first complete remission.

Results

The median follow-up was 12 months (range, 0.5-184 months) for the entire group. Kaplan-Meier estimates of the 3-year overall survival for patients who underwent allo-HSCT and patients who received only salvage chemotherapy were 67% and 12%, respectively. Additionally, the Kaplan-Meier estimates of 5-year overall survival for patients who underwent allo-HSCT and patients who received only salvage chemotherapy were 44% and 4%, respectively (P < .001). Complete remission was obtained in 25 patients (83.3%) who underwent allo-HSCT; however, the disease of only 3 patients (3.8%) exhibited complete response after salvage chemotherapy.

Conclusion

Allo-HSCT is still the best-known treatment option with curative potential in patients with treatment-refractory AML. Therefore, all efforts should be made in an attempt to find a suitable matched donor in order to perform allo-HSCT.  相似文献   
123.
124.
125.
A 17‐year‐old boy presented with recurring severe dermatitis of the face of 5‐months duration that resembled impetigo. He had been treated with several courses of antibiotics without improvement. Biopsy showed changes consistent with allergic contact dermatitis and patch testing later revealed sensitization to benzoyl peroxide, which the patient had been using for the treatment of acne vulgaris.  相似文献   
126.
127.
Guidelines and consensus on the management of patients with acne aim to give evidence-based, expert-group recommendations. This review compares current guidelines and consensus articles to provide a compilation of recommendations on the treatment of acne with oral isotretinoin. Ten common, relevant, clinical questions are addressed, based on published recommendations, including the indications of isotretinoin, the proposed daily dose, the cumulative isotretinoin dose and the laboratory monitoring needed. Recommendations on special considerations are also addressed, including the timing of procedures and the question of an association of depression or inflammatory bowel disease with isotretinoin. A major limitation is the use of different classification systems for acne across guidelines. The recommended daily dose ranges from 0.3 to 0.5 mg/kg in the European guidelines to up to 1 mg/kg in the US guidelines. A specific duration of treatment of at least 6 months is only recommended in the European guidelines. All guidelines report the need of strict pregnancy prevention measures. The European, French and US guidelines recommend to monitor for symptoms of depression. Important clinical questions that are inconsistently addressed in guidelines include the age indication, the recommendation for a cumulative dose, the timing of procedures, the association of isotretinoin with IBD, the recommendation for preventing acne flares and for appropriate laboratory monitoring. These topics should be clearly included in the recommendations of guidelines as they are often raised in everyday clinical practice.  相似文献   
128.
129.
130.
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