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   927823篇
  免费   64289篇
  国内免费   2429篇
耳鼻咽喉   12694篇
儿科学   29602篇
妇产科学   26685篇
基础医学   130331篇
口腔科学   25423篇
临床医学   77691篇
内科学   188537篇
皮肤病学   19359篇
神经病学   74355篇
特种医学   37487篇
外国民族医学   342篇
外科学   146032篇
综合类   19379篇
一般理论   297篇
预防医学   66684篇
眼科学   21109篇
药学   65853篇
中国医学   1849篇
肿瘤学   50832篇
  2018年   9515篇
  2017年   7549篇
  2016年   8099篇
  2015年   9198篇
  2014年   13037篇
  2013年   20326篇
  2012年   27370篇
  2011年   29116篇
  2010年   17586篇
  2009年   16752篇
  2008年   27920篇
  2007年   29777篇
  2006年   29876篇
  2005年   29446篇
  2004年   28208篇
  2003年   27339篇
  2002年   26845篇
  2001年   41580篇
  2000年   42743篇
  1999年   36514篇
  1998年   10381篇
  1997年   9513篇
  1996年   9365篇
  1995年   8736篇
  1994年   8367篇
  1993年   7861篇
  1992年   28383篇
  1991年   27147篇
  1990年   26560篇
  1989年   25464篇
  1988年   23687篇
  1987年   23295篇
  1986年   22405篇
  1985年   21308篇
  1984年   16067篇
  1983年   13708篇
  1982年   8383篇
  1981年   7331篇
  1979年   14727篇
  1978年   10384篇
  1977年   8797篇
  1976年   8257篇
  1975年   9071篇
  1974年   10802篇
  1973年   10258篇
  1972年   9721篇
  1971年   8967篇
  1970年   8618篇
  1969年   8052篇
  1968年   7703篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
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   
4.
5.
6.
Abstract

This study is a single-center, retrospective analysis of postmenopausal women presenting with dyspareunia and vulvar pain, aiming to evaluate relative effectiveness of vestibular CO2 laser therapy as a treatment. Three monthly sessions of laser were performed to each patient and thereafter a three-months follow-up was stablished. A total number of 72 patients undergoing vestibular laser treatment were recruited from patient files in the period between 2016 and 2018. Among these, 39 women also received a concomitant treatment with ospemifene (60?mg/day) during the study period. There was a statistically significant reduction of all the symptoms in both groups up to the three month follow-up. Regarding dryness and dyspareunia, the relief tent to be more prominent in the ospemifene?+?laser group at all follow-ups and remained statistically significant at three-month follow-up. Specifically, vestibular dryness was significantly lower in the ospemifene?+?laser group compared with the laser treatment group (?87% vs???34%, respectively), and the vestibular health score started declining faster in the ospemifene?+?laser group. Although, additional research is needed to understand the mechanism of action, our data shows that a combination regimen of laser and ospemifene may improve clinical effectiveness for long-term treatment of symptoms associated with the under-recognized genitourinary syndrome of menopause.  相似文献   
7.
8.
According to the current nutritional recommendations issued by professional diabetes and nutrition associations, diabetic patients should keep to a diet consisting of 45–60% carbohydrates, 10–20% protein, and not more than 35% fat. However, not all of these nutritional recommendations are evidence based. For example, current studies show that the intake of insoluble roughage may be underrepresented. It is also possible that diabetic patients could benefit from keeping to the lower end of the recommended range for carbohydrates (45%) and the upper end of the range advised for protein (20%).  相似文献   
9.
10.
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