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   1643082篇
  免费   122865篇
  国内免费   3897篇
耳鼻咽喉   23643篇
儿科学   50207篇
妇产科学   47900篇
基础医学   233999篇
口腔科学   47315篇
临床医学   140264篇
内科学   322658篇
皮肤病学   34064篇
神经病学   132063篇
特种医学   66552篇
外国民族医学   490篇
外科学   258012篇
综合类   40422篇
现状与发展   2篇
一般理论   496篇
预防医学   123586篇
眼科学   38290篇
药学   120071篇
中国医学   3176篇
肿瘤学   86634篇
  2018年   15364篇
  2015年   15384篇
  2014年   22062篇
  2013年   33969篇
  2012年   45351篇
  2011年   48062篇
  2010年   28679篇
  2009年   27180篇
  2008年   45819篇
  2007年   49323篇
  2006年   49236篇
  2005年   48529篇
  2004年   46986篇
  2003年   45470篇
  2002年   44160篇
  2001年   71080篇
  2000年   72845篇
  1999年   61969篇
  1998年   18002篇
  1997年   16494篇
  1996年   16250篇
  1995年   15308篇
  1994年   14635篇
  1993年   13745篇
  1992年   50586篇
  1991年   48981篇
  1990年   48013篇
  1989年   46272篇
  1988年   43215篇
  1987年   42551篇
  1986年   40694篇
  1985年   39045篇
  1984年   29767篇
  1983年   25422篇
  1982年   15772篇
  1981年   14199篇
  1980年   13433篇
  1979年   29049篇
  1978年   20728篇
  1977年   17469篇
  1976年   16315篇
  1975年   17773篇
  1974年   21721篇
  1973年   20785篇
  1972年   19764篇
  1971年   18277篇
  1970年   17523篇
  1969年   16700篇
  1968年   15512篇
  1967年   14280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.
9.
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   
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