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   1976680篇
  免费   140744篇
  国内免费   3993篇
耳鼻咽喉   28504篇
儿科学   64863篇
妇产科学   57535篇
基础医学   285853篇
口腔科学   55568篇
临床医学   167999篇
内科学   388440篇
皮肤病学   41685篇
神经病学   154979篇
特种医学   77912篇
外国民族医学   672篇
外科学   307589篇
综合类   42238篇
现状与发展   1篇
一般理论   525篇
预防医学   145579篇
眼科学   45661篇
药学   147337篇
  1篇
中国医学   3887篇
肿瘤学   104589篇
  2018年   18904篇
  2016年   16089篇
  2015年   18430篇
  2014年   25974篇
  2013年   39723篇
  2012年   53875篇
  2011年   57716篇
  2010年   34560篇
  2009年   32652篇
  2008年   55569篇
  2007年   59747篇
  2006年   60641篇
  2005年   59419篇
  2004年   57068篇
  2003年   55390篇
  2002年   54513篇
  2001年   88095篇
  2000年   90531篇
  1999年   77334篇
  1998年   21920篇
  1997年   19809篇
  1996年   19936篇
  1995年   18712篇
  1994年   17813篇
  1993年   16645篇
  1992年   61856篇
  1991年   60465篇
  1990年   59460篇
  1989年   57538篇
  1988年   53728篇
  1987年   52703篇
  1986年   50424篇
  1985年   48152篇
  1984年   36069篇
  1983年   31095篇
  1982年   18678篇
  1981年   16428篇
  1979年   34060篇
  1978年   23945篇
  1977年   20521篇
  1976年   19424篇
  1975年   21359篇
  1974年   25268篇
  1973年   24306篇
  1972年   23126篇
  1971年   21521篇
  1970年   20251篇
  1969年   19219篇
  1968年   18233篇
  1967年   16289篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
Abstract

Objective: To understand the origin of extremely high gonadotropin levels in a perimenopausal woman.

Methods: A 52-year-old woman with a 2?months of amenorrhea followed spontaneous menstrual cycles recovery was referred to our outpatient clinic with elevated follicle-stimulating hormone (FSH, 483 mUI/ml), luteinizing hormone (LH, 475 mUI/ml) and prolactin (PRL, 173?ng/ml). She was known to take levosulpiride. The gonadotropin levels did not fit with the clinical features.

Results: A gonadotroph tumor was ruled out. Further analysis confirmed constantly high FSH, LH and PRL levels. The measurements were repeated using different analytical platforms with different results. After serial dilutions, nonlinearity was present suggesting an immunoassay interference. After post-polyethylene glycol recovery, hormone levels appeared in the normal range. Anti-goat antibodies were recognized in the serum of the patient.

Conclusions: This case report shows a case of falsely abnormal high gonadotropin and PRL levels in a woman during menopause transition. In the clinical practice the evaluation of gonadotropin profile is not recommended at this age, but the abnormal levels stimulated further evaluation. An interference in the assay due to anti-goat antibodies resulted in abnormally high level of FSH and LH. A strict collaboration between clinicians and the laboratory is needed, when laboratory findings do not correspond to clinical findings.  相似文献   
6.
7.
8.
9.
10.

Aims

To examine the influence of pre-existing psychiatric disorder on the choice of treatment in patients with gynaecological cancer.

Materials and methods

The analyses were based on all patients who underwent surgical treatment for endometrial, ovarian or cervical cancer who were registered in the Danish Gynecological Cancer Database in the years 2007–2014 (3059 patients with ovarian cancer, 5100 patients with endometrial cancer and 1150 with cervical cancer). Logistic regression model and Cox regression model, adjusted for relevant confounders, were used to estimate the effect of pre-existing psychiatric disorder on the course of cancer treatment. Our outcomes were (i) presurgical oncological treatment, (ii) macroradical surgery for patients with ovarian cancer, (iii) radiation/chemotherapy within 30 days and 100 days after surgery and (iv) time from surgery to first oncological treatment.

Results

In the group of patients with ovarian cancer, more patients with a psychiatric disorder received macroradical surgery versus patients without a psychiatric disorder, corresponding to an adjusted odds ratio of 1.24 (95% confidence interval 0.62–2.41) and the chance for having oncological treatment within 100 days was odds ratio = 1.26 (95% confidence interval 0.77–2.10). As for patients with endometrial cancer, all outcome estimates were close to unity. The adjusted odds ratio for oncological treatment within 30 days after surgery in patients with cervical cancer with a history of psychiatric disorder was 0.20 (95% confidence interval 0.03–1.54).

Conclusions

We did not find any significant differences in the treatment of ovarian and endometrial cancer in patients with pre-existing psychiatric diagnoses. When it comes to oncological treatment, we suggest that increased attention should be paid to patients with cervical cancer having a pre-existing psychiatric diagnosis.  相似文献   
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